RE: [myrinet] GPSHMEM and Myrinet (one-sided communication)
"Greg Lindahl" <[email protected]>
| Newsgroups | gmane.network.myrinet.general |
|---|---|
| Message-ID | <[email protected]> |
> It is based on Dr. Jarek Nieplocha's ARMCI one-sided > library which is rather robust and supports myrinet. Right. So either (1) it doesn't use GM, since it's been around for a while and can't possibly be using the not-yet-released GM with "get", or (2) it uses 2-sided messaging to implement 1-sided messaging, which can be done but is usually slow. I couldn't tell from the one paper I read about it in. I have a subset prototype SHMEM library based on GM. Since only "put" is in the production version of GM, the subset is pretty obvious: no get, no atomic ops. There are some subtle aspects to implementing things correctly. -- g