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FPorr's avatar
FPorr
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6 years ago

OpenCL software emulation crashes when the Kernel uses more than 6MByte of memory

Hello, the OpenCL software emulation crashes with a segmentation fault when the kernel utilizes more than 6MByte of memory. Example: uchar arr[128*128*384]; // 6MByte -- Works uchar arr[128*128*38...
FPorr's avatar
FPorr
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6 years ago

Hi,

thank you for the reply, I attached a simple test case to reproduce the error.

The build commands I used were:

# Host application
make
# Kernel
aoc -march=emulator krnl.cl -o bin/krnl_emu.aocx

and for execution:

CL_CONTEXT_EMULATOR_DEVICE_INTELFPGA=1 bin/host bin/krnl_emu.aocx

Depending on which size define is enabled in krnl.cl, the application either crashes or executes.