Provide host memory allocation/release callbacks to the copies#318
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devreal wants to merge 2 commits intoTESSEorg:masterfrom
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Provide host memory allocation/release callbacks to the copies#318devreal wants to merge 2 commits intoTESSEorg:masterfrom
devreal wants to merge 2 commits intoTESSEorg:masterfrom
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Allow PaRSEC to allocate host memory on demand, e.g., when data is evicted or we move data to a host task. Most data may never be needed on the host so it is wasteful to allocate it eagerly. Signed-off-by: Joseph Schuchart <joseph.schuchart@stonybrook.edu>
This branch contains features needed now and in the future by TTG. Once they have been merged into PaRSEC mainline we can switch back. Signed-off-by: Joseph Schuchart <joseph.schuchart@stonybrook.edu>
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Allocate host memory on demand, only when really needed (e.g., when PaRSEC decides to evict memory from the device to the host). With the umpire pinned memory allocator it is important to keep host memory allocations as few as possible so we cannot afford to back every buffer with pinned memory. This PR uses a change in PaRSEC (ICLDisco/parsec#711) to allow PaRSEC to ask us to allocate host memory. This change is included in a fork of PaRSEC so we change the PaRSEC reference similar to #316. Once everything has found its way into upstream PaRSEC we will return to it.