openmpi-* subports, and publishing of binaries
ryandesign at macports.org
Thu Feb 4 01:54:58 UTC 2021
On Feb 3, 2021, at 03:29, Eric Borisch wrote:
> This seems off.
> Hwloc’s own page talks about the availability of pre-compiled packages, and its demos focus on determining what threads to bind to (on OSes where explicit binding is possible; last I checked it wasn’t on OSX) if you want to maximize or minimize shared resources. (You may want shared L2 cache between threads for cooperative tasks, or to put threads on cores with different memory busses - and bind memory allocs, too - if your code is burning through large, and separable, chunks of memory at max bandwidth.)
> It is designed to be used at runtime to provide a uniform (across OSes) way to interrogate the running system’s topology.
> This is separate from flags like -march which lock in instruction sets which will be used — and can create decidedly non-portable binaries.
You can always ask the committer if he has any further explanation.
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