Improve memory usage for stablecode-completion-alpha-3b #1019
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Running this model on DGX-H100 with FSDP was giving OOM error. With the proposed change peak memory usage is now 67.79GB. This works by fusing RoPE and GELU into one fusion region and this allows rematerialization pass to recompute GELU in backward fusion region. More details in #246 (comment)
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Running this model on DGX-H100 with FSDP was giving an OOM error. With the proposed change peak memory usage is now 67.79GB.
This works by fusing RoPE and GELU into one fusion region and allowing the rematerialization pass to recompute GELU in the backward fusion region.
More details in #246 (comment).
The following command was used to check the OOM error.
cc @apaz-cli