Reduce block_indices and block_offsets computation to once per forward pass
#102
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DamianSzwichtenberg
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AR: @madamczykhabana please test it and merge |
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In testing I saw 8.4% perf boost with acc 100.14% |
michalkuligowski
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Sep 26, 2024
#289) Re-implements following PRs for current habana_main: #102 (Removing div_i32 operations from each layer) #115 (removing scatter for reshape&cache in case of prompt) Accuracy (GSM8K on Llama3.1-8B-Instruct): | Tasks |Version| Filter |n-shot| Metric | |Value | |Stderr| |---------------|------:|----------------|-----:|-----------|---|-----:|---|-----:| |gsm8k_cot_llama| 3|flexible-extract| 8|exact_match|↑ |0.8415|± |0.0101| | | |strict-match | 8|exact_match|↑ |0.8400|± |0.0101| I've benchmarked this change on Llama3.1-8B-Instruct and on average, +2.50% throughput gain (+558.14 tok/s, ~21594 tok/s -> ~22152 tok/s) can be observed across all prefill buckets on G2, with up to +4.40% (+956.79 tok/s, ~25031 -> ~25988 tok/s) throughput increase in compute-bound scenarios.
zhouyu5
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Sep 27, 2024
HabanaAI#289) Re-implements following PRs for current habana_main: HabanaAI#102 (Removing div_i32 operations from each layer) HabanaAI#115 (removing scatter for reshape&cache in case of prompt) Accuracy (GSM8K on Llama3.1-8B-Instruct): | Tasks |Version| Filter |n-shot| Metric | |Value | |Stderr| |---------------|------:|----------------|-----:|-----------|---|-----:|---|-----:| |gsm8k_cot_llama| 3|flexible-extract| 8|exact_match|↑ |0.8415|± |0.0101| | | |strict-match | 8|exact_match|↑ |0.8400|± |0.0101| I've benchmarked this change on Llama3.1-8B-Instruct and on average, +2.50% throughput gain (+558.14 tok/s, ~21594 tok/s -> ~22152 tok/s) can be observed across all prefill buckets on G2, with up to +4.40% (+956.79 tok/s, ~25031 -> ~25988 tok/s) throughput increase in compute-bound scenarios.
zhouyu5
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Sep 27, 2024
HabanaAI#289) Re-implements following PRs for current habana_main: HabanaAI#102 (Removing div_i32 operations from each layer) HabanaAI#115 (removing scatter for reshape&cache in case of prompt) Accuracy (GSM8K on Llama3.1-8B-Instruct): | Tasks |Version| Filter |n-shot| Metric | |Value | |Stderr| |---------------|------:|----------------|-----:|-----------|---|-----:|---|-----:| |gsm8k_cot_llama| 3|flexible-extract| 8|exact_match|↑ |0.8415|± |0.0101| | | |strict-match | 8|exact_match|↑ |0.8400|± |0.0101| I've benchmarked this change on Llama3.1-8B-Instruct and on average, +2.50% throughput gain (+558.14 tok/s, ~21594 tok/s -> ~22152 tok/s) can be observed across all prefill buckets on G2, with up to +4.40% (+956.79 tok/s, ~25031 -> ~25988 tok/s) throughput increase in compute-bound scenarios.
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Currently,
block_indicesandblock_offsetsare computed for each LLM layer, this is not necessary as they don't change during forward pass.