<div dir="ltr">Hi:<div><br></div><div style>Are there any studies that have been done on the effect of turning on MPI_THREAD_MULTIPLE with the latest versions of MPICH? I have an AMR application where halo or ghost updates require lots of small messages to be sent/rec'd and I am currently seeing a performance hit with a vendor specific implementation based on MPICH2 and am trying to see whether there are any implementations out there that might deliver better performance. </div>
<div style><br></div><div style>Thanks,</div><div style>Bobby</div></div>