[Starpu-devel] Control data movement to/from device

[Amani Alonazi <amani.alonazi@kaust.edu.sa>]

Dear Starpu-dev,

I have a matrix A with concurrent computation per tile each is a starpu-task. Ideally, I don't want the whole matrix to be alive in the device memory because sizeof(A) > sizeof(devicemem). How can I control how many tiles/tasks should be alive in the device memory?

I want to avoid getting this message: [starpu][_starpu_memory_reclaim_generic] Not enough memory left on node CUDA 0. Your application data set seems too huge to fit on the device, StarPU will cope by trying to purge 5228 MiB out. This message will not be printed again for further purges.

I tried different values the following variables but still nothing have change the same message, same data required to purge:

STARPU_PREFETCH
STARPU_LIMIT_MAX_SUBMITTED_TASKS
STARPU_LIMIT_MIN_SUBMITTED_TASKS

Many thanks,

--

Amani

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