oscarbarenys1

AMD OpenCL on Snow Leo questions

Discussion created by oscarbarenys1 on Aug 28, 2009
Latest reply on Aug 28, 2009 by michael.chu

Hi,

since its released suppose someone at AMD can answer this:

I have questions regarding OpenCL in a 4850 in Snow Leopard..

1. Has it doubles support? cl_khr_double

2. Has OpenGL interop? cl_apple_gl_sharing..

3. Return kernel binaries (in AMD IL)

Assuming some are negative are they going to be supported later via SO updates.. or will stay as of  now..

 

Also I have seen some info that return:

Name: Radeon HD 4870
Vendor: AMD
Type: GPU
Device Version: OpenCL 1.0
Driver Version: 1.0
Compute Units: 4
Work Group Size: 1024
Clock: 1000 MHz
Global Memory: 128 MB
Local Memory: 16384 KB
Cache Size: 0 KB
Cache Line Size: 128 Bytes
Available: Yes
Double-Precision: No
Extensions:

Why Compute Units: 4 are not 800 shaders or 160 vector units..

why no extensions?..

 

atomic are not supposedly supported on hardware (cl_khr_global_int32_base_atomics,cl_khr_global_int32_extendde_atomics)

Also what about

  cl_khr_byte_addressable_store

are memory not byte addresable?

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