Posted by Michael Bien on Feb 12, 2011; 5:40pm
URL: https://forum.jogamp.org/Starting-with-JOCL-tp2481173p2481259.html

Hi,

i got almost the same mail a few days ago :)
http://forum.jogamp.org/HelloJOCL-Problems-on-MacOSX-tp2456996p2456996.html

please reduce the buffer length or increase the direct memory size as mentioned in my answer. I will reduce the hardcoded value in the demo... which should make it compatible with more machines.

best regards,
and sorry for the inconveniences,

michael

On 02/12/2011 06:26 PM, John_Idol [via jogamp] wrote:

HI All,

I am getting started with JOCL, trying to run the HolleJOCL demo.

Here's my problem:

When creating buffers I get an error on buffer C, the only only created as WRITE_ONLY

CLBuffer<FloatBuffer> clBufferA = context.createFloatBuffer(globalWorkSize, READ_ONLY);
CLBuffer<FloatBuffer> clBufferB = context.createFloatBuffer(globalWorkSize, READ_ONLY);
CLBuffer<FloatBuffer> clBufferC = context.createFloatBuffer(globalWorkSize, WRITE_ONLY);

Error message:

Exception in thread "main" java.lang.OutOfMemoryError: Direct buffer memory
        at java.nio.Bits.reserveMemory(Bits.java:633)
        at java.nio.DirectByteBuffer.<init>(DirectByteBuffer.java:98)
        at java.nio.ByteBuffer.allocateDirect(ByteBuffer.java:288)
        at com.jogamp.common.nio.Buffers.newDirectByteBuffer(Buffers.java:67)
        at com.jogamp.common.nio.Buffers.newDirectFloatBuffer(Buffers.java:109)
        at com.jogamp.opencl.CLContext.createFloatBuffer(CLContext.java:316)
        at HelloJOCL.main(HelloJOCL.java:35)

Any idea what this is and how can I get past it?

Thanks!

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