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Introduce support for GGJT v3 file format

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llama.com can now load weights that use the new file format which was
introduced a few weeks ago. Note that, unlike llama.cpp, we will keep
support for old file formats in our tool so you don't need to convert
your weights when the upstream project makes breaking changes. Please
note that using ggjt v3 does make avx2 inference go 5% faster for me.
This commit is contained in:
Justine Tunney 2023-06-03 13:48:52 -07:00
parent 6ae18a10ba
commit 8fdb31681a
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GPG key ID: BE714B4575D6E328
33 changed files with 3829 additions and 371 deletions
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61
libc/runtime/finddebugbinary.c
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@ -16,12 +16,69 @@
│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
│ PERFORMANCE OF THIS SOFTWARE. │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "ape/sections.internal.h"
#include "libc/calls/calls.h"
#include "libc/elf/def.h"
#include "libc/elf/elf.h"
#include "libc/elf/struct/ehdr.h"
#include "libc/elf/struct/sym.h"
#include "libc/errno.h"
#include "libc/intrin/bits.h"
#include "libc/macros.internal.h"
#include "libc/runtime/runtime.h"
#include "libc/runtime/symbols.internal.h"
#include "libc/str/str.h"
#include "libc/sysv/consts/map.h"
#include "libc/sysv/consts/o.h"
#include "libc/sysv/consts/prot.h"
static bool GetElfSymbolValue(const Elf64_Ehdr *ehdr, size_t esize,
const char *name, uint64_t *res) {
Elf64_Xword i, n;
const char *stab;
const Elf64_Sym *st;
if ((stab = GetElfStringTable(ehdr, esize)) &&
(st = GetElfSymbolTable(ehdr, esize, &n))) {
for (i = 0; i < n; ++i) {
if (!strcmp(stab + st[i].st_name, name)) {
*res = st[i].st_value;
return true;
}
}
}
return false;
}
static bool IsMyDebugBinaryImpl(const char *path) {
int fd;
void *map;
int64_t size;
uintptr_t value;
bool res = false;
if ((fd = open(path, O_RDONLY | O_CLOEXEC, 0)) != -1) {
// sanity test that this .com.dbg file (1) is an elf image, and (2)
// contains the same number of bytes of code as our .com executable
// which is currently running in memory.
if ((size = lseek(fd, 0, SEEK_END)) != -1 &&
(map = mmap(0, size, PROT_READ, MAP_SHARED, fd, 0)) != MAP_FAILED) {
if (GetElfSymbolValue(map, size, "_etext", &value)) {
res = !_etext || value == (uintptr_t)_etext;
}
munmap(map, size);
}
close(fd);
}
return res;
}
static bool IsMyDebugBinary(const char *path) {
int e;
bool res;
e = errno;
res = IsMyDebugBinaryImpl(path);
errno = e;
return res;
}
/**
* Returns path of binary with the debug information, or null.
@ -42,12 +99,12 @@ const char *FindDebugBinary(void) {
} else if (n > 4 && READ32LE(p + n - 4) == READ32LE(".com") &&
n + 4 < ARRAYLEN(buf)) {
mempcpy(mempcpy(buf, p, n), ".dbg", 5);
if (fileexists(buf)) {
if (IsMyDebugBinary(buf)) {
res = buf;
}
} else if (n + 8 < ARRAYLEN(buf)) {
mempcpy(mempcpy(buf, p, n), ".com.dbg", 9);
if (fileexists(buf)) {
if (IsMyDebugBinary(buf)) {
res = buf;
}
}