<html>
<head>
<meta content="text/html; charset=windows-1252"
http-equiv="Content-Type">
</head>
<body bgcolor="#FFFFFF" text="#000000">
On 12-05-14 02:45 PM, Ian Taylor wrote:<br>
<br>
So it tuns out that<br>
<br>
const uint MAX_SOURCE_SIZE;<br>
<br>
works on some systems but not on others.<br>
One should use<br>
<br>
const unsigned int MAX_SOURCE_SIZE;<br>
<br>
which should work everywhere.<br>
<br>
<br>
<blockquote
cite="mid:CAOUH9r5NWjPOnagE7HB6Esn0z4Mt0kz3JYTA_m=_UE+KQZEoyg@mail.gmail.com"
type="cite">Hi Dave,
<div>I'd like to say I had some success recreating your example,
but instead I've had a series of failures that probably only
indicate two things: your code doesn't yet work well on Windows
and/or I have no idea what I'm doing.</div>
<div><br>
</div>
<div>I started on a linux virtual machine, but didn't get past the
stage of installing OpenCL because GPU calcs are apparently not
supported on virtual machines. Then I tried a linux cluster, but
it doesn't have a supported GPU. Then I tried using the BFGS
update on the CPU on the linux virtual machine. However, it's
not as easy as just setting USE_GPU_FLAG=0 because without being
able to include OpenCL and CL, you get lots of errors like
"newfmin.cpp:247:3: error: ‘cl_int’ does not name a type"
<div>
<br>
</div>
<div>I then tried compiling on some Windows computers (one with
Nvidia GPU and MS Visual C++, and another with an AMD GPU and
MingGW). Those efforts didn't bring any more luck. With both
Visual C++ and MinGW, I got similar errors in newfmin.cpp
(pasted below). I don't know enough to make the errors go
away, so I think my next step will be to wait until I'm in
front of a non-virtual linux computer.</div>
<div>-Ian</div>
<div><br>
</div>
<div>#### some errors while compiling the new newfmin.cpp in
Windows ####<br>
<div><br>
</div>
</div>
<div>VC error snippet:</div>
<blockquote style="margin:0 0 0 40px;border:none;padding:0px">
<div>
<div>
<div>..\..\..\..\src\linad99\newfmin.cpp(214) : error
C4430: missing type specifier -</div>
</div>
</div>
<div>
<div> int assumed. Note: C++ does not support default-int</div>
</div>
<div>
<div>..\..\..\..\src\linad99\newfmin.cpp(214) : error C2146:
syntax error : missing '</div>
</div>
<div>
<div>;' before identifier 'MAX_SOURCE_SIZE'</div>
</div>
<div>
<div>..\..\..\..\src\linad99\newfmin.cpp(258) : warning
C4512: 'opencl_manager' : ass</div>
</div>
<div>
<div>ignment operator could not be generated</div>
</div>
<div>
<div><br>
</div>
</div>
</blockquote>
MinGW error snippet:
<blockquote style="margin:0 0 0 40px;border:none;padding:0px">
<div>
<div>newfmin.cpp:214:9: error: 'uint' does not name a type</div>
</div>
<div>
<div>newfmin.cpp: In constructor
'opencl_manager::opencl_manager()':</div>
</div>
<div>
<div>newfmin.cpp:282:40: error: class 'opencl_manager' does
not have any field named</div>
</div>
<div>
<div>'MAX_SOURCE_SIZE'</div>
</div>
<div>
<div>newfmin.cpp: In member function 'cl_int
opencl_manager::LoadKernelSource(const c</div>
</div>
<div>
<div>har*)':</div>
</div>
<div>
<div>newfmin.cpp:298:31: error: 'MAX_SOURCE_SIZE' was not
declared in this scope</div>
</div>
</blockquote>
<div>
<div><br>
</div>
<div><br>
<div>
<div class="gmail_quote">On Sat, May 12, 2012 at 8:31 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">Has
anyone else actually got this example to work?<br>
<br>
Some advice. Older GPU's (whatever that is) probably<br>
do not support double precision.<br>
<br>
WRT using the BFGS update on the CPU. It does not seem<br>
to perform as well as doing iton the GPU. I think this
is<br>
due to roundoff error. The CPU is carrying out
additions in a different<br>
way. It may be that with say 4K or more parameters and
this<br>
(artificial) example roundoff error becomes important.<br>
<br>
I stored the matrix by rows. It is now appears that it
should be stored<br>
by columns for the fastest matrix * vector
multiplication.<br>
<br>
<br>
<br>
_______________________________________________<br>
Developers mailing list<br>
<a moz-do-not-send="true"
href="mailto:Developers@admb-project.org"
target="_blank">Developers@admb-project.org</a><br>
<a moz-do-not-send="true"
href="http://lists.admb-project.org/mailman/listinfo/developers"
target="_blank">http://lists.admb-project.org/mailman/listinfo/developers</a><br>
</blockquote>
</div>
<br>
</div>
</div>
</div>
</div>
</blockquote>
<br>
</body>
</html>