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[Bugfix] fixed shm reduceAdd & rope error when batch size is large #457

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merged 1 commit into from
Jun 19, 2024
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[Bugfix] fixed shm reduceAdd & rope error when batch size is large #457

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2 changes: 1 addition & 1 deletion src/kernels/rotary_embedding_kernels.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -241,7 +241,7 @@ static inline void chatglm2ApplyRotaryPosEmbeding(T *query, T *key, int qStride,
for (int head = 0; head < head_num; ++head) {
for (int bs = 0; bs < batch_size; ++bs) {
for (int seq = 0; seq < seq_len; ++seq) {
T *pF = query + seq * qStride + head * dim;
T *pF = query + bs * seq_len * qStride + seq * qStride + head * dim;

int pos = position_ids[seq];
float *pcos = emb_cos + pos * dim;
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3 changes: 2 additions & 1 deletion src/utils/shm_reduction.cpp
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Expand Up @@ -50,8 +50,9 @@ void ShmReduction::ShmResize(int rank, size_t size) {
// shm_unlink(shmCtx_.name);

// alloc and map new shm
total_size = total_size - shmCtx_.nbytes + size;
shmCtx_.nbytes = size;
shmCtx_.nblocks = (size + SHM_BLOCK_SIZE - 1) / SHM_BLOCK_SIZE;
total_size = sizeof(int) * shmCtx_.nstates + shmCtx_.nbytes + shmCtx_.nblocks * shmCtx_.nstates;
// Truncate the shared memory to the desired size
if (rank == 0 && ftruncate(shmCtx_.fp, total_size) == -1) {
perror("shm ftruncate failed.");
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