algo: Optimize host code in GPU Hitfinder. (!1404) · Merge requests · Computing / cbmroot · GitLab

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Felix Weiglhofer requested to merge fweig/cbmroot:gpu-optimization into master Oct 22, 2023

Introduces three optimizations to the host code of the STS Hitfinder:

Allocate all buffers beforehand on GPU, do dynamic allocation per TS on CPU (allocating the pinned memory for GPU is very slow)
Speedup sorting Digis by module by using a lookup table to map the sensor address to an index and parallelizing the copy
Copy hits to pinned memory to speed up copy from the GPU

Edited Oct 23, 2023 by Felix Weiglhofer