SOTA 2-bit quants (#4773)
* iq2_xxs: basics * iq2_xxs: scalar and AVX2 dot products Needed to change Q8_K to have quants in the -127...127 range, else the IQ2_XXS AVX implementation becomes very awkward. The alternative would have been to use Q8_0 instead. Perhaps I'll change later, for now this is what we have. * iq2_xxs: ARM_NEON dot product Somehow strangely slow (112 ms/token). * iq2_xxs: WIP Metal Dequantize works, something is still wrong with the dot product. * iq2_xxs: Metal dot product now works We have PP-512 = 475 t/s TG-128 = 47.3 t/s Not the greatest performance, but not complete garbage either. * iq2_xxs: slighty faster dot product TG-128 is now 48.4 t/s * iq2_xxs: slighty faster dot product TG-128 is now 50.9 t/s * iq2_xxs: even faster Metal dot product TG-128 is now 54.1 t/s. Strangely enough, putting the signs lookup table into shared memory has a bigger impact than the grid values being in shared memory. * iq2_xxs: dequantize CUDA kernel - fix conflict with master * iq2_xxs: quantized CUDA dot product (MMVQ) We get TG-128 = 153.1 t/s * iq2_xxs: slightly faster CUDA dot product TG-128 is now at 155.1 t/s. * iq2_xxs: add to llama ftype enum * iq2_xxs: fix MoE on Metal * Fix missing MMQ ops when on hipBLAS I had put the ggml_supports_mmq call at the wrong place. * Fix bug in qequantize_row_iq2_xxs The 0.25f factor was missing. Great detective work by @ggerganov! * Fixing tests * PR suggestion --------- Co-authored-by: Iwan Kawrakow <iwan.kawrakow@gmail.com>
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10 changed files with 902 additions and 1 deletions
314
ggml-metal.metal
314
ggml-metal.metal
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@ -2446,6 +2446,12 @@ typedef struct {
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} block_q6_K;
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// 210 bytes / block
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typedef struct {
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half d;
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uint16_t qs[QK_K/8];
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} block_iq2_xxs;
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// 66 bytes / block for QK_K = 256, so 2.0625 bpw
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//====================================== dot products =========================
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void kernel_mul_mv_q2_K_f32_impl(
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@ -3468,6 +3474,221 @@ kernel void kernel_mul_mv_q6_K_f32(
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kernel_mul_mv_q6_K_f32_impl(src0, src1, dst, ne00, ne01, ne02, ne10, ne12, ne0, ne1, r2, r3, tgpig, tiisg, sgitg);
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}
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// ======================= "True" 2-bit
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constexpr constant static uint64_t kgrid_iq2xxs[256] = {
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0x0808080808080808, 0x080808080808082b, 0x0808080808081919, 0x0808080808082b08,
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0x0808080808082b2b, 0x0808080808190819, 0x0808080808191908, 0x08080808082b0808,
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0x08080808082b082b, 0x08080808082b2b08, 0x08080808082b2b2b, 0x0808080819080819,
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0x0808080819081908, 0x0808080819190808, 0x0808080819192b08, 0x08080808192b0819,
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0x08080808192b1908, 0x080808082b080808, 0x080808082b08082b, 0x080808082b082b2b,
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0x080808082b2b082b, 0x0808081908080819, 0x0808081908081908, 0x0808081908190808,
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0x0808081908191919, 0x0808081919080808, 0x080808192b081908, 0x080808192b192b08,
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0x0808082b08080808, 0x0808082b0808082b, 0x0808082b082b082b, 0x0808082b2b08082b,
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0x0808190808080819, 0x0808190808081908, 0x0808190808190808, 0x08081908082b0819,
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0x08081908082b1908, 0x0808190819080808, 0x080819081908082b, 0x0808190819082b08,
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0x08081908192b0808, 0x080819082b080819, 0x080819082b081908, 0x080819082b190808,
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0x080819082b2b1908, 0x0808191908080808, 0x080819190808082b, 0x0808191908082b08,
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0x08081919082b0808, 0x080819191908192b, 0x08081919192b2b19, 0x080819192b080808,
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0x080819192b190819, 0x0808192b08082b19, 0x0808192b08190808, 0x0808192b19080808,
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0x0808192b2b081908, 0x0808192b2b2b1908, 0x08082b0808080808, 0x08082b0808081919,
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0x08082b0808082b08, 0x08082b0808191908, 0x08082b08082b2b08, 0x08082b0819080819,
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0x08082b0819081908, 0x08082b0819190808, 0x08082b081919082b, 0x08082b082b082b08,
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0x08082b1908081908, 0x08082b1919080808, 0x08082b2b0808082b, 0x08082b2b08191908,
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0x0819080808080819, 0x0819080808081908, 0x0819080808190808, 0x08190808082b0819,
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0x0819080819080808, 0x08190808192b0808, 0x081908082b081908, 0x081908082b190808,
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0x081908082b191919, 0x0819081908080808, 0x0819081908082b08, 0x08190819082b0808,
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0x0819081919190808, 0x0819081919192b2b, 0x081908192b080808, 0x0819082b082b1908,
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0x0819082b19081919, 0x0819190808080808, 0x0819190808082b08, 0x08191908082b0808,
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0x08191908082b1919, 0x0819190819082b19, 0x081919082b080808, 0x0819191908192b08,
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0x08191919192b082b, 0x0819192b08080808, 0x0819192b0819192b, 0x08192b0808080819,
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0x08192b0808081908, 0x08192b0808190808, 0x08192b0819080808, 0x08192b082b080819,
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0x08192b1908080808, 0x08192b1908081919, 0x08192b192b2b0808, 0x08192b2b19190819,
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0x082b080808080808, 0x082b08080808082b, 0x082b080808082b2b, 0x082b080819081908,
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0x082b0808192b0819, 0x082b08082b080808, 0x082b08082b08082b, 0x082b0819082b2b19,
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0x082b081919082b08, 0x082b082b08080808, 0x082b082b0808082b, 0x082b190808080819,
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0x082b190808081908, 0x082b190808190808, 0x082b190819080808, 0x082b19081919192b,
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0x082b191908080808, 0x082b191919080819, 0x082b1919192b1908, 0x082b192b2b190808,
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0x082b2b0808082b08, 0x082b2b08082b0808, 0x082b2b082b191908, 0x082b2b2b19081908,
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0x1908080808080819, 0x1908080808081908, 0x1908080808190808, 0x1908080808192b08,
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0x19080808082b0819, 0x19080808082b1908, 0x1908080819080808, 0x1908080819082b08,
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0x190808081919192b, 0x19080808192b0808, 0x190808082b080819, 0x190808082b081908,
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0x190808082b190808, 0x1908081908080808, 0x19080819082b0808, 0x19080819192b0819,
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0x190808192b080808, 0x190808192b081919, 0x1908082b08080819, 0x1908082b08190808,
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0x1908082b19082b08, 0x1908082b1919192b, 0x1908082b192b2b08, 0x1908190808080808,
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0x1908190808082b08, 0x19081908082b0808, 0x190819082b080808, 0x190819082b192b19,
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0x190819190819082b, 0x19081919082b1908, 0x1908192b08080808, 0x19082b0808080819,
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0x19082b0808081908, 0x19082b0808190808, 0x19082b0819080808, 0x19082b0819081919,
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0x19082b1908080808, 0x19082b1919192b08, 0x19082b19192b0819, 0x19082b192b08082b,
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0x19082b2b19081919, 0x19082b2b2b190808, 0x1919080808080808, 0x1919080808082b08,
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0x1919080808190819, 0x1919080808192b19, 0x19190808082b0808, 0x191908082b080808,
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0x191908082b082b08, 0x1919081908081908, 0x191908191908082b, 0x191908192b2b1908,
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0x1919082b2b190819, 0x191919082b190808, 0x191919082b19082b, 0x1919191908082b2b,
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0x1919192b08080819, 0x1919192b19191908, 0x19192b0808080808, 0x19192b0808190819,
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0x19192b0808192b19, 0x19192b08192b1908, 0x19192b1919080808, 0x19192b2b08082b08,
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0x192b080808081908, 0x192b080808190808, 0x192b080819080808, 0x192b0808192b2b08,
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0x192b081908080808, 0x192b081919191919, 0x192b082b08192b08, 0x192b082b192b0808,
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0x192b190808080808, 0x192b190808081919, 0x192b191908190808, 0x192b19190819082b,
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0x192b19192b081908, 0x192b2b081908082b, 0x2b08080808080808, 0x2b0808080808082b,
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0x2b08080808082b2b, 0x2b08080819080819, 0x2b0808082b08082b, 0x2b08081908081908,
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0x2b08081908192b08, 0x2b08081919080808, 0x2b08082b08190819, 0x2b08190808080819,
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0x2b08190808081908, 0x2b08190808190808, 0x2b08190808191919, 0x2b08190819080808,
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0x2b081908192b0808, 0x2b08191908080808, 0x2b0819191908192b, 0x2b0819192b191908,
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0x2b08192b08082b19, 0x2b08192b19080808, 0x2b08192b192b0808, 0x2b082b080808082b,
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0x2b082b1908081908, 0x2b082b2b08190819, 0x2b19080808081908, 0x2b19080808190808,
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0x2b190808082b1908, 0x2b19080819080808, 0x2b1908082b2b0819, 0x2b1908190819192b,
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0x2b1908192b080808, 0x2b19082b19081919, 0x2b19190808080808, 0x2b191908082b082b,
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0x2b19190819081908, 0x2b19191919190819, 0x2b192b082b080819, 0x2b192b19082b0808,
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0x2b2b08080808082b, 0x2b2b080819190808, 0x2b2b08082b081919, 0x2b2b081908082b19,
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0x2b2b082b08080808, 0x2b2b190808192b08, 0x2b2b2b0819190808, 0x2b2b2b1908081908,
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};
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constexpr constant static uint8_t ksigns_iq2xs[128] = {
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0, 129, 130, 3, 132, 5, 6, 135, 136, 9, 10, 139, 12, 141, 142, 15,
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144, 17, 18, 147, 20, 149, 150, 23, 24, 153, 154, 27, 156, 29, 30, 159,
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160, 33, 34, 163, 36, 165, 166, 39, 40, 169, 170, 43, 172, 45, 46, 175,
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48, 177, 178, 51, 180, 53, 54, 183, 184, 57, 58, 187, 60, 189, 190, 63,
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192, 65, 66, 195, 68, 197, 198, 71, 72, 201, 202, 75, 204, 77, 78, 207,
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80, 209, 210, 83, 212, 85, 86, 215, 216, 89, 90, 219, 92, 221, 222, 95,
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96, 225, 226, 99, 228, 101, 102, 231, 232, 105, 106, 235, 108, 237, 238, 111,
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240, 113, 114, 243, 116, 245, 246, 119, 120, 249, 250, 123, 252, 125, 126, 255,
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};
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constexpr constant static uint8_t kmask_iq2xs[8] = {1, 2, 4, 8, 16, 32, 64, 128};
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void kernel_mul_mv_iq2_xxs_f32_impl(
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device const void * src0,
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device const float * src1,
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device float * dst,
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constant int64_t & ne00,
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constant int64_t & ne01,
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constant int64_t & ne02,
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constant int64_t & ne10,
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constant int64_t & ne12,
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constant int64_t & ne0,
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constant int64_t & ne1,
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constant uint & r2,
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constant uint & r3,
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threadgroup int8_t * shared_values [[threadgroup(0)]],
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uint3 tgpig[[threadgroup_position_in_grid]],
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uint tiisg[[thread_index_in_simdgroup]],
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uint sgitg[[simdgroup_index_in_threadgroup]]) {
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const int nb = ne00/QK_K;
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const int r0 = tgpig.x;
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const int r1 = tgpig.y;
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const int im = tgpig.z;
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const int first_row = (r0 * N_SIMDGROUP + sgitg) * N_DST;
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const int ib_row = first_row * nb;
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const uint i12 = im%ne12;
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const uint i13 = im/ne12;
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const uint offset0 = (i12/r2)*(nb*ne01) + (i13/r3)*(nb*ne01*ne02);
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device const block_iq2_xxs * x = (device const block_iq2_xxs *) src0 + ib_row + offset0;
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device const float * y = (device const float *) src1 + r1*ne10 + im*ne00*ne1;
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float yl[32];
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float sumf[N_DST]={0.f}, all_sum;
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const int nb32 = nb * (QK_K / 32);
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threadgroup uint64_t * values = (threadgroup uint64_t *)shared_values;
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threadgroup uint8_t * shared_signs = (threadgroup uint8_t *)(values + 256);
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{
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int nval = 4;
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int pos = (32*sgitg + tiisg)*nval;
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for (int i = 0; i < nval; ++i) values[pos + i] = kgrid_iq2xxs[pos + i];
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nval = 2;
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pos = (32*sgitg + tiisg)*nval;
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for (int i = 0; i < nval; ++i) shared_signs[pos+i] = ksigns_iq2xs[pos+i];
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threadgroup_barrier(mem_flags::mem_threadgroup);
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}
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#if QK_K == 256
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const int ix = tiisg;
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device const float * y4 = y + 32 * ix;
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for (int ib32 = ix; ib32 < nb32; ib32 += 32) {
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for (int i = 0; i < 32; ++i) {
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yl[i] = y4[i];
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}
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const int ibl = ib32 / (QK_K / 32);
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const int ib = ib32 % (QK_K / 32);
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device const block_iq2_xxs * xr = x + ibl;
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device const uint16_t * q2 = xr->qs + 4 * ib;
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device const half * dh = &xr->d;
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for (int row = 0; row < N_DST; row++) {
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const float db = dh[0];
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device const uint8_t * aux8 = (device const uint8_t *)q2;
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const uint32_t aux32 = q2[2] | (q2[3] << 16);
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const float d = db * (0.5f + (aux32 >> 28));
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float sum = 0;
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for (int l = 0; l < 4; ++l) {
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const threadgroup uint8_t * grid = (const threadgroup uint8_t *)(values + aux8[l]);
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const uint8_t signs = shared_signs[(aux32 >> 7*l) & 127];
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for (int j = 0; j < 8; ++j) {
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sum += yl[8*l + j] * grid[j] * (signs & kmask_iq2xs[j] ? -1.f : 1.f);
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}
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}
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sumf[row] += d * sum;
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dh += nb*sizeof(block_iq2_xxs)/2;
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q2 += nb*sizeof(block_iq2_xxs)/2;
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}
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y4 += 32 * 32;
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}
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#else
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// TODO
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#endif
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for (int row = 0; row < N_DST; ++row) {
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all_sum = simd_sum(sumf[row]);
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if (tiisg == 0) {
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dst[r1*ne0 + im*ne0*ne1 + first_row + row] = all_sum * 0.25f;
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}
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}
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}
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[[host_name("kernel_mul_mv_iq2_xxs_f32")]]
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kernel void kernel_mul_mv_iq2_xxs_f32(
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device const void * src0,
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device const float * src1,
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device float * dst,
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constant int64_t & ne00,
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constant int64_t & ne01,
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constant int64_t & ne02,
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constant uint64_t & nb00,
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constant uint64_t & nb01,
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constant uint64_t & nb02,
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constant int64_t & ne10,
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constant int64_t & ne11,
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constant int64_t & ne12,
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constant uint64_t & nb10,
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constant uint64_t & nb11,
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constant uint64_t & nb12,
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constant int64_t & ne0,
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constant int64_t & ne1,
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constant uint & r2,
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constant uint & r3,
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threadgroup int8_t * shared_values [[threadgroup(0)]],
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uint3 tgpig[[threadgroup_position_in_grid]],
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uint tiisg[[thread_index_in_simdgroup]],
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uint sgitg[[simdgroup_index_in_threadgroup]]) {
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kernel_mul_mv_iq2_xxs_f32_impl(src0, src1, dst, ne00, ne01, ne02, ne10, ne12, ne0, ne1, r2, r3, shared_values, tgpig, tiisg, sgitg);
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}
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//============================= templates and their specializations =============================
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// NOTE: this is not dequantizing - we are simply fitting the template
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@ -3739,6 +3960,31 @@ void dequantize_q6_K(device const block_q6_K *xb, short il, thread type4x4 & reg
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}
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}
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template <typename type4x4>
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void dequantize_iq2_xxs(device const block_iq2_xxs * xb, short il, thread type4x4 & reg) {
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// il is 0...15 for QK_K = 256 => index of block of 32 is il/2
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const float d = xb->d;
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const int ib32 = il/2;
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il = il%2;
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// il = 0 or 1. il = 0 processes the first 16 quants in a block of 32, il = 1 the second 16
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// each block of 32 needs 2 uint32_t's for the quants & scale, so 4 uint16_t's.
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device const uint16_t * q2 = xb->qs + 4*ib32;
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const uint32_t aux32_g = q2[0] | (q2[1] << 16);
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const uint32_t aux32_s = q2[2] | (q2[3] << 16);
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thread const uint8_t * aux8 = (thread const uint8_t *)&aux32_g;
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const float dl = d * (0.5f + (aux32_s >> 28)) * 0.25f;
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constant uint8_t * grid = (constant uint8_t *)(kgrid_iq2xxs + aux8[2*il+0]);
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uint8_t signs = ksigns_iq2xs[(aux32_s >> 14*il) & 127];
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for (int i = 0; i < 8; ++i) {
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reg[i/4][i%4] = dl * grid[i] * (signs & kmask_iq2xs[i] ? -1.f : 1.f);
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}
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grid = (constant uint8_t *)(kgrid_iq2xxs + aux8[2*il+1]);
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signs = ksigns_iq2xs[(aux32_s >> (14*il+7)) & 127];
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for (int i = 0; i < 8; ++i) {
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reg[2+i/4][i%4] = dl * grid[i] * (signs & kmask_iq2xs[i] ? -1.f : 1.f);
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}
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}
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template<typename block_q, short nl, void (*dequantize_func)(device const block_q *, short, thread float4x4 &)>
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kernel void kernel_get_rows(
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device const void * src0,
|
||||
|
|
@ -4278,6 +4524,7 @@ template [[host_name("kernel_get_rows_q3_K")]] kernel get_rows_t kernel_get_rows
|
|||
template [[host_name("kernel_get_rows_q4_K")]] kernel get_rows_t kernel_get_rows<block_q4_K, QK_NL, dequantize_q4_K>;
|
||||
template [[host_name("kernel_get_rows_q5_K")]] kernel get_rows_t kernel_get_rows<block_q5_K, QK_NL, dequantize_q5_K>;
|
||||
template [[host_name("kernel_get_rows_q6_K")]] kernel get_rows_t kernel_get_rows<block_q6_K, QK_NL, dequantize_q6_K>;
|
||||
template [[host_name("kernel_get_rows_iq2_xxs")]] kernel get_rows_t kernel_get_rows<block_iq2_xxs, QK_NL, dequantize_iq2_xxs>;
|
||||
|
||||
//
|
||||
// matrix-matrix multiplication
|
||||
|
|
@ -4314,6 +4561,7 @@ template [[host_name("kernel_mul_mm_q3_K_f32")]] kernel mat_mm_t kernel_mul_mm<b
|
|||
template [[host_name("kernel_mul_mm_q4_K_f32")]] kernel mat_mm_t kernel_mul_mm<block_q4_K, QK_NL, dequantize_q4_K>;
|
||||
template [[host_name("kernel_mul_mm_q5_K_f32")]] kernel mat_mm_t kernel_mul_mm<block_q5_K, QK_NL, dequantize_q5_K>;
|
||||
template [[host_name("kernel_mul_mm_q6_K_f32")]] kernel mat_mm_t kernel_mul_mm<block_q6_K, QK_NL, dequantize_q6_K>;
|
||||
template [[host_name("kernel_mul_mm_iq2_xxs_f32")]] kernel mat_mm_t kernel_mul_mm<block_iq2_xxs, QK_NL, dequantize_iq2_xxs>;
|
||||
|
||||
//
|
||||
// indirect matrix-matrix multiplication
|
||||
|
|
@ -4362,6 +4610,7 @@ template [[host_name("kernel_mul_mm_id_q3_K_f32")]] kernel mat_mm_id_t kernel_mu
|
|||
template [[host_name("kernel_mul_mm_id_q4_K_f32")]] kernel mat_mm_id_t kernel_mul_mm_id<block_q4_K, QK_NL, dequantize_q4_K>;
|
||||
template [[host_name("kernel_mul_mm_id_q5_K_f32")]] kernel mat_mm_id_t kernel_mul_mm_id<block_q5_K, QK_NL, dequantize_q5_K>;
|
||||
template [[host_name("kernel_mul_mm_id_q6_K_f32")]] kernel mat_mm_id_t kernel_mul_mm_id<block_q6_K, QK_NL, dequantize_q6_K>;
|
||||
template [[host_name("kernel_mul_mm_id_iq2_xxs_f32")]] kernel mat_mm_id_t kernel_mul_mm_id<block_iq2_xxs, QK_NL, dequantize_iq2_xxs>;
|
||||
|
||||
//
|
||||
// matrix-vector multiplication
|
||||
|
|
@ -5134,3 +5383,68 @@ kernel void kernel_mul_mv_id_q6_K_f32(
|
|||
tiisg,
|
||||
sgitg);
|
||||
}
|
||||
|
||||
[[host_name("kernel_mul_mv_id_iq2_xxs_f32")]]
|
||||
kernel void kernel_mul_mv_id_iq2_xxs_f32(
|
||||
device const char * ids,
|
||||
device const char * src1,
|
||||
device float * dst,
|
||||
constant uint64_t & nbi1,
|
||||
constant int64_t & ne00,
|
||||
constant int64_t & ne01,
|
||||
constant int64_t & ne02,
|
||||
constant uint64_t & nb00,
|
||||
constant uint64_t & nb01,
|
||||
constant uint64_t & nb02,
|
||||
constant int64_t & ne10,
|
||||
constant int64_t & ne11,
|
||||
constant int64_t & ne12,
|
||||
constant int64_t & ne13,
|
||||
constant uint64_t & nb10,
|
||||
constant uint64_t & nb11,
|
||||
constant uint64_t & nb12,
|
||||
constant int64_t & ne0,
|
||||
constant int64_t & ne1,
|
||||
constant uint64_t & nb1,
|
||||
constant uint & r2,
|
||||
constant uint & r3,
|
||||
constant int & idx,
|
||||
device const char * src00,
|
||||
device const char * src01,
|
||||
device const char * src02,
|
||||
device const char * src03,
|
||||
device const char * src04,
|
||||
device const char * src05,
|
||||
device const char * src06,
|
||||
device const char * src07,
|
||||
threadgroup int8_t * shared_values [[threadgroup(0)]],
|
||||
uint3 tgpig[[threadgroup_position_in_grid]],
|
||||
uint tiitg[[thread_index_in_threadgroup]],
|
||||
uint tiisg[[thread_index_in_simdgroup]],
|
||||
uint sgitg[[simdgroup_index_in_threadgroup]]) {
|
||||
device const char * src0[8] = {src00, src01, src02, src03, src04, src05, src06, src07};
|
||||
|
||||
const int64_t bid = tgpig.z/(ne12*ne13);
|
||||
|
||||
tgpig.z = tgpig.z%(ne12*ne13);
|
||||
|
||||
const int32_t id = ((device int32_t *) (ids + bid*nbi1))[idx];
|
||||
|
||||
kernel_mul_mv_iq2_xxs_f32_impl(
|
||||
src0[id],
|
||||
(device const float *) (src1 + bid*nb11),
|
||||
dst + bid*ne0,
|
||||
ne00,
|
||||
ne01,
|
||||
ne02,
|
||||
ne10,
|
||||
ne12,
|
||||
ne0,
|
||||
ne1,
|
||||
r2,
|
||||
r3,
|
||||
shared_values,
|
||||
tgpig,
|
||||
tiisg,
|
||||
sgitg);
|
||||
}
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue