[mvapich-discuss] Query on OSU latency test

[Matthew Koop]

Kartik,

A short description of each test is on our website:
http://mvapich.cse.ohio-state.edu/benchmarks/

The main difference is that in osu_latency_mt the receiving side has
two threads competing to receive the message. This is designed to create
contention for locks and evaluate the performance of the library under
this contention.

Matt


On Sat, 29 Dec 2007, Kartik Thathagar wrote:

> Hi,
>
>
>
> My name is Kartik Thathagar. And I am working with E-Infochips in Ahmedabad.
>
>
>
> I have query regarding osu_latency and osu_latency_mt tests.
>
>
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> I have tried to run both the tests and on both the test I got different
> results means on osu_latency I got 6.33 usec and in osu_latency_mt I got
> 11.82 usec for 4 bytes datasize so can you tell me why this different came?
>
>
>
> So can you describe me what is the difference between these to
> tests(osu_latency and osu_latency_mt)?
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>
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> I have already read that osu_latency_mt test is multithread receiving side
> tests. Let me know something more in this.
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>
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> Hope you will reply me soon.
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> Thanks,
>
> Kartik
>
>
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