Andrei Neamtu wrote:
Hello gmx,
I have a question regarding infiniband interconnect: Is
there any difference (in terms of performance) between integrated
on-board infiniband (ex. Mellanox) and PCI-Express infiniband adaptors
(due to pci-e limitations)? Which one is recomended. We are in a
process of buying a cluster on which gromacs will be the main
computational engine.
Any help will be greatly appreciated!
Thank you,
Andrei
If you are buying a serious cluster then ask them to let you do
benchmarks. the PCI bus can be a bottleneck, although the throughput is
still quite OK. It also depends on how many cores are sharing the
connection.
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