What does out-of-place and in-place mean in the test routines? about nccl HOT 3 CLOSED

An in-place operation uses the same buffer for its output as was used to
provide its input. An out-of-place operation has distinct input and output
buffers.

Hope this helps,
Cliff
On Feb 25, 2016 10:06 PM, "linnan wang" [email protected] wrote:

Hello,

What does out-of-place and in-place mean in the test routines? Thank you.

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#12.

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Hello Cliff,

Thanks for the reply. This is very helpful. However, what if I can to see the difference between tree-based broadcast and ring-based broadcast? Is there such benchmarks so that I can compare with? Thanks.

from nccl.

NCCL's design allows it to choose among many algorithms for each
collective, but this early version of NCCL only thus far implements
ring-based (not tree-based or other) algorithms.

Thanks,
Cliff
On Feb 26, 2016 2:02 AM, "linnan wang" [email protected] wrote:

Hello Cliff,

Thanks for the reply. This is very helpful. However, what if I can to see
the difference between tree-based broadcast and ring-based broadcast? Is
there such benchmarks so that I can compare with? Thanks.

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#12 (comment).

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