vbatts/llama.cpp
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kv-cache : fix defrag condition

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ggml-ci
This commit is contained in:
Georgi Gerganov 2025-02-06 14:34:45 +02:00
parent 0f1c1cab2c
commit b15fede7a9
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GPG key ID: 449E073F9DC10735
1 changed files with 4 additions and 2 deletions
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src/llama-context.cpp
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@ -532,11 +532,13 @@ struct llama_batch_manager : public llama_batch_manager_i {
// decide if we need to defrag the kv cache
if (cparams.causal_attn && cparams.defrag_thold >= 0.0f) {
const float fragmentation = kv_self.n >= 128 ? 1.0f - float(kv_self.used)/float(kv_self.n) : 0.0f;
// - do not defrag small contexts (i.e. < 2048 tokens)
// - count the padding towards the number of used tokens
const float fragmentation = kv_self.n >= 2048 ? 1.0f - float(kv_self.used + lctx.get_ctx_padding(cparams))/float(kv_self.n) : 0.0f;
// queue defragmentation for next llama_kv_cache_update
if (fragmentation > cparams.defrag_thold) {
//LLAMA_LOG_INFO("fragmentation: %.2f\n", fragmentation);
LLAMA_LOG_DEBUG("%s: fragmentation: %.2f - requesting defrag\n", __func__, fragmentation);
kv_self.defrag();
}