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Old 03-May-2010, 05:59   #1
cho
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Default ATI Stream SDK v2.1 include image object support
http://developer.amd.com/gpu/ATIStre...fault.aspx#one

What’s New in v2.1
  • Support for openSUSE™ 11.2 and Red Hat® Enterprise Linux® 5.4.
  • Support for OpenCL™ / OpenGL® interoperability.
  • Support for OpenCL™ byte addressable stores3,4.
  • Support for OpenCL™ images3.
  • Extension: Support for double-precision floating point basic arithmetic in OpenCL™ C kernels.
  • Extension: Support for AMD media operations in OpenCL™.
  • Extension: Support for device fission in OpenCL™ 4.
  • Extension: Support for device attribute queries in OpenCL™.
  • Preview Feature: Support forbinary OpenCL™ kernels.
  • Additional OpenCL™ samples:
    • HistogramAtomics
    • MatrixMulDouble (under cpp_cl)
    • MatrixMulImage
    • SimpleGL
    • SimpleImage
    • SobelFilterImage (under cpp_cl)
    • URNGNoiseGL
  • Stream KernelAnalyzer 1.5 installer now bundled with the ATI Stream SDK v2.1.
  • Various OpenCL™ compiler and runtime fixes and enhancements (see developer release notes for more details).
  • Support for new hardware:
    • ATI Radeon™ HD 5830 GPU
    • ATI Radeon™ HD 5450 GPU
    • ATI FirePro™ V8800 GPU
    • ATI FirePro™ V7800 GPU
    • ATI FirePro™ V5800 GPU
    • ATI FirePro™ V4800 GPU
    • ATI FirePro™ V3800 GPU
    • ATI Mobility Radeon™ HD 5800 Series GPUs
    • ATI Mobility Radeon™ HD 5700 Series GPUs
    • ATI Mobility Radeon™ HD 5600 Series GPUs
    • ATI Mobility Radeon™ HD 5400 Series GPUs
    • ATI FirePro M7820™ GPU
    • ATI FirePro M5800™ GPU
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Old 03-May-2010, 07:14   #2
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What is this device fission? Can't find a thing on Khronos API registry.
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Old 03-May-2010, 08:50   #3
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Originally Posted by cho View Post
  • Extension: Support for device fission in OpenCL™ 4.
OpenCL 4 ? May be a typo and they refer to OpenGL 4 ?

I was wondering too what device fission is
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Old 03-May-2010, 09:30   #4
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While AMD is giving its new support to Red Hat, NVIDIA is trying to stop Linux Driver Service = =
And why they put of DP?That's bad....
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Old 03-May-2010, 10:02   #5
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Quote:
Originally Posted by Dade View Post
OpenCL 4 ? May be a typo and they refer to OpenGL 4 ?
No, it's a reference number in the original material.
Quote:

I was wondering too what device fission is
Split a multicore-CPU into 2 or more opencl cpu devices?

Why would you need such a thing?
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Old 03-May-2010, 10:10   #6
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Split a multicore-CPU into 2 or more opencl cpu devices?

Why would you need such a thing?
I use AMD OpenCL CPU device only as debugging/developing tool (native code is always faster). This would be a very handy feature to emulate the presence of multiple OpenCL devices.

It would be a quite nice feature to have for testing/debugging.
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Old 03-May-2010, 10:50   #7
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Blimey, that's more like v3 than v2.1. EDIT: hmm, the DP support is still "preview".

Fission might allow treating the cores of a CPU separately. Older versions of the SDK take over all of a CPU's cores I believe. With fission the programmer can presumably keep a host core (or more) to himself, unaffected by OpenCL device allocation.

Also, presumably, this means that task parallelism across CPU cores can be more finely-grained.

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Old 03-May-2010, 11:26   #8
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Blimey, that's more like v3 than v2.1. EDIT: hmm, the DP support is still "preview".
I'm not sure about this preview thing. They have an extension for DP support which has reduced functionalities than the official Khronos extension. Are they going to continue using this or somehow transfer to the official extension in the future?
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Old 03-May-2010, 11:42   #9
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I presume they can't expose an official extension until the extension is entirely supported, hence "preview": a subset of the official extension's features.
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Old 03-May-2010, 12:13   #10
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Fission might allow treating the cores of a CPU separately. Older versions of the SDK take over all of a CPU's cores I believe. With fission the programmer can presumably keep a host core (or more) to himself, unaffected by OpenCL device allocation.
It was possible to set the amount of threads used by OpenCL CPU device in previous SDK by defining the CPU_MAX_COMPUTE_UNITS env. variable.

May be it is now possible to control this behaviour with an OpenCL extension.
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Old 03-May-2010, 13:49   #11
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Great: No image support for HD4000 series. Well done!
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Old 04-May-2010, 07:57   #12
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Quote:
Originally Posted by Jawed View Post
Blimey, that's more like v3 than v2.1. EDIT: hmm, the DP support is still "preview".

Fission might allow treating the cores of a CPU separately. Older versions of the SDK take over all of a CPU's cores I believe. With fission the programmer can presumably keep a host core (or more) to himself, unaffected by OpenCL device allocation.

Also, presumably, this means that task parallelism across CPU cores can be more finely-grained.
Quote:
OpenCL extension support for device fission in OpenCL, enabling developers to sub-divide an OpenCL device and allowing multiple work kernels to be assigned to that device.
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Old 04-May-2010, 09:15   #13
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From ATI SDK cl_ext.h:

Code:
typedef CL_API_ENTRY cl_int (CL_API_CALL * clCreateSubDevicesEXT_fn)(
    cl_device_id     /* in_device */,
    const cl_device_partition_property_ext * /* partition_properties */,
    cl_uint          /* num_entries */,
    cl_device_id *   /* out_devices */,
    cl_uint *        /* num_devices */);
It looks like you can split an OpenCL in multiple instances.

This define was interesting:

/* cl_affinity_domain_ext */
#define CL_AFFINITY_DOMAIN_NUMA_EXT 0x1
#define CL_AFFINITY_DOMAIN_L4_CACHE_EXT 0x2
#define CL_AFFINITY_DOMAIN_L3_CACHE_EXT 0x3
#define CL_AFFINITY_DOMAIN_L2_CACHE_EXT 0x4
#define CL_AFFINITY_DOMAIN_L1_CACHE_EXT 0x5
#define CL_AFFINITY_DOMAIN_NEXT_FISSIONABLE_EXT 0x6

Are they using OpenCL on some big CPU/NUMA cluster ?
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Old 04-May-2010, 10:23   #14
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AMD has demoed an internal build of Powder Toy, running parallel across 24 CPU cores in a 4S system while ago, using x86 OCL run-time.
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Old 04-May-2010, 11:04   #15
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Note the original post links the wrong documents, e.g. this is the correct version (1.0d, not 1.0c as described on the SDK Documentation page) of the OpenCL Programming Guide:

http://developer.amd.com/gpu/ATIStre...ming_Guide.pdf

Documentation page:

http://developer.amd.com/gpu/ATIStre...mentation.aspx

Table A.1 indicates that Fission is not available on any GPU.

That section of the document also describes the media extensions, including the pack/unpack/SAD stuff.

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Old 04-May-2010, 11:16   #16
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Where have all the extensions gone? All of them aren't here.
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Quote:
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So in a nutshell, model [BLANK] will have [BLANK], up to [BLANK], and even [BLANK] for a power consumption of just [BLANK]. Impressive.
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Old 08-May-2010, 10:49   #17
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Quote:
Originally Posted by Dade View Post
From ATI SDK cl_ext.h:

Code:
typedef CL_API_ENTRY cl_int (CL_API_CALL * clCreateSubDevicesEXT_fn)(
    cl_device_id     /* in_device */,
    const cl_device_partition_property_ext * /* partition_properties */,
    cl_uint          /* num_entries */,
    cl_device_id *   /* out_devices */,
    cl_uint *        /* num_devices */);
It looks like you can split an OpenCL in multiple instances.

This define was interesting:

/* cl_affinity_domain_ext */
#define CL_AFFINITY_DOMAIN_NUMA_EXT 0x1
#define CL_AFFINITY_DOMAIN_L4_CACHE_EXT 0x2
#define CL_AFFINITY_DOMAIN_L3_CACHE_EXT 0x3
#define CL_AFFINITY_DOMAIN_L2_CACHE_EXT 0x4
#define CL_AFFINITY_DOMAIN_L1_CACHE_EXT 0x5
#define CL_AFFINITY_DOMAIN_NEXT_FISSIONABLE_EXT 0x6

Are they using OpenCL on some big CPU/NUMA cluster ?
Looks like AMD is preparing for FUSION CPU/APU launch!
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Old 14-May-2010, 14:02   #18
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With those binary OpenCL kernels would it be possible to hack inline assembly now? (Do subroutine calls in OpenCL kernels get compiled to actual CALLs?)
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Old 14-May-2010, 14:58   #19
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Quote:
Originally Posted by MfA View Post
(Do subroutine calls in OpenCL kernels get compiled to actual CALLs?)
Usually subroutines are in-lined.

The ISA has CALL (since R600) with a stack (32 level) and supports jump tables (since Evergreen) of up to 256 elements. Never seen these in ISA code I've looked at, though I haven't tried to generate the latter.
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Old 14-May-2010, 17:07   #20
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Shame, would make patching a lot easier.
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Old 14-May-2010, 17:17   #21
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Looks like AMD is preparing for FUSION CPU/APU launch!
The Future is Fission.

whehe
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