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Re: Why no OpenCL output on iMac OS X Lion?

  • To: mathgroup at smc.vnet.net
  • Subject: [mg125260] Re: Why no OpenCL output on iMac OS X Lion?
  • From: Murray Eisenberg <murray at math.umass.edu>
  • Date: Fri, 2 Mar 2012 07:51:51 -0500 (EST)
  • Delivered-to: l-mathgroup@mail-archive0.wolfram.com
  • References: <201202291221.HAA28305@smc.vnet.net> <201203011037.FAA13349@smc.vnet.net>
  • Reply-to: murray at math.umass.edu

I _have_ already installed XCode, specifically, version 4.2.1.

On 3/1/12 5:37 AM, George Woodrow III wrote:
> I think that you will need to install XCode.
>
> I had a recent communication with Wolfram tech support, and they indicated that to use the functionality to generate code and to use OpenCL, you need to have Xcode installed. There are open source options as well, but since Xcode is now free through the app store (for Lion), there is no real reason not to just install the program.
>
> Actually *testing* OpenCl within Mathematica is on my list of things to do.
>
> george woodrow
>
>
>
> On Feb 29, 2012, at 7:21 AM, Murray Eisenberg wrote:
>
>> I'm running Mathematica 8.0.4 on the latest, 2011 iMac (3.4 GHz Core i7,
>> 16 GB RAM) under OS X Lion (10.7.3). The graphics adapter is an AMD
>> Radeon HD 6970M (2048 MB VRAM).
>>
>> After loading OpneCLLink, OpenCLQ[] returns True.
>>
>> Yet evaluating examples from the ref page for OpenCLFractalRender3D
>> returns nothing. E.g., OpenCLFractalRender3D[].
>>
>> Moreover, it seems as if the OpenCL link is being closed, or the package
>> unloaded, immediately after I try such an evaluation -- because if I
>> evaluate it again, now I get the input expression itself returned; and
>> indeed the $ContextPath no longer includes OpenCLLink (or the SymboliC
>> and CCompilerDriver automatically added by loading OpenCLLink).
>>
>> What could be wrong?
>>
>> --
>> Murray Eisenberg                     murray at math.umass.edu
>> Mathematics&  Statistics Dept.
>> Lederle Graduate Research Tower      phone 413 549-1020 (H)
>> University of Massachusetts                413 545-2859 (W)
>> 710 North Pleasant Street            fax   413 545-1801
>> Amherst, MA 01003-9305
>>
>
>

-- 
Murray Eisenberg                     murray at math.umass.edu
Mathematics & Statistics Dept.
Lederle Graduate Research Tower      phone 413 549-1020 (H)
University of Massachusetts                413 545-2859 (W)
710 North Pleasant Street            fax   413 545-1801
Amherst, MA 01003-9305



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