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anton-v-gorshkov avatar anton-v-gorshkov commented on June 12, 2024

Hi @abagusetty, thanks for your report!
First, your code is written in a way it's not guaranteed memcpy will be completed by the end of the program, that's why it's not shown. To make it work you should add wait:

...
  queue[0]->memcpy(d_a, h_a, n*sizeof(float)).wait();

  return 0;
}

Second, please, make sure you are using Level Zero backend/device. With that I see the following result:

$ onetrace -d ./test 
n : 536869888, (GBs) : 2.14748

=== Device Timing Results: ===

                Total Execution Time (ns):            727342119
    Total Device Time for L0 backend (ns):            203665333

== L0 Backend: ==

                            Kernel,       Calls,           Time (ns),    Time (%),        Average (ns),            Min (ns),            Max (ns)
zeCommandListAppendMemoryCopy(M2D),           1,           203665333,      100.00,           203665333,           203665333,           203665333

from pti-gpu.

abagusetty avatar abagusetty commented on June 12, 2024

Thanks @anton-v-gorshkov for clarification, closing this.

from pti-gpu.

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