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Hi,<br>
<br>
I have a cluster with nodes of 2 sockets of 4 cores+1 GPU.<br>
<br>
Is there a way to run a calculation with 4*N MPI tasks where<br>
my matrix is first built outside PETSc, then to solve the<br>
linear system using PETSc Mat, Vec, KSP on only N MPI <br>
tasks to adress efficiently the N GPUs ?<br>
<br>
I am playing with the communicators without success, but I <br>
am surely confusing things...<br>
<br>
Thanks,<br>
<br>
Pierre<br>
<br>
<div class="moz-signature">-- <br>
<b>Trio_U support team</b>
<br>
Marthe ROUX (01 69 08 00 02) Saclay
<br>
Pierre LEDAC (04 38 78 91 49) Grenoble
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