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On 12-05-09 10:45 AM, Ian Taylor wrote:<br>
<br>
The BFGS without GPU is already in the version of newfmin.cpp. Look
for something like<br>
gpu _flag near label21:<br>
<br>
<br>
<br>
<blockquote
cite="mid:CAOUH9r5u60YuZi3sJ+d_BZTxcavfuQX1NjsssA=68aHAs=uSKg@mail.gmail.com"
type="cite">Thanks Dave.
<div><br>
<div>Just in case anyone else is as ignorant as I was yesterday,
don't waste your time trying setting up the GPU stuff on a
virtual machine, because it won't work.</div>
<div><br>
</div>
<div>That got me thinking it would be nice to work toward having
independent options for the BFGS algorithm and GPU calcs. Dave
did note that the characteristics of the BFGS algorithm make
it well suited to GPU, but it's easy to imagine that there
could be cases where the new algorithm would perform better
even without the extra power.</div>
<div>-Ian<br>
<br>
<div class="gmail_quote">On Wed, May 9, 2012 at 7:50 AM, dave
fournier <span dir="ltr"><<a moz-do-not-send="true"
href="mailto:davef@otter-rsch.com" target="_blank">davef@otter-rsch.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex"><br>
To get the flexibility for testing the GPU version of
newfmin.cpp<br>
I have modified it to work with vectors not divisible by
256.<br>
GPU's like powers of 2. For example they can do 256 or
perhaps 4*256<br>
operations concurrently. New version is attached.<br>
<br>
<br>
<br>
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