2 Queues, 1 shared usm

1

Hi,
I have 2 queues each belongs to different device. I want them to update same host vector data.

int *A    = malloc_device<int>(host.size(), Q1); 
int *B    = malloc_device<int>(host.size(), Q2);

How can I synchronise the data in the end ? Because when I use memcpy it overwrites previous Queue data.

Is there a way to malloc shared data among multi GPUs (or devices) ?

2

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