Update downloader to support local weights cache #37
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For some models, we ensure that weights are cached on nodes. This commit updates the downloader to be compatible with our caching strategy. One side-effect of this implementation is that weights will not be re-used when cog-vllm is run locally, because weights are now downloaded to `/weights/vllm` instead of `/src/...`. However, users can still re-use local weights by downloading them and then pointing to the local location.
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For some models, we ensure that weights are cached on nodes. This commit updates the downloader to be compatible with our caching strategy.
One side-effect of this implementation is that weights will not be re-used when cog-vllm is run locally, because weights are now downloaded to
/weights/vllminstead of/src/.... However, users can still re-use local weights by downloading them and then pointing to the local location.