Wrong results when running design on hardware

Hi HRZ,

Yes, my design falls into the first case you mentioned.

I thought that adding a fence on global memory would ensure consistency, i.e. something like this was initially added in my design:

Kernel updating off-chip memory:

void Krnl_Store( ... ) {
  ...
  // writing to global-memory location
  write_mem_fence(CLK_GLOBAL_MEM_FENCE);
  write_channel_altera(chan_Store2GG_ack, 1);
  ...
}

Kernel reading off-chip memory:

  void Krnl_GG( ... ) {
  ...
  ack = read_channel_altera(chan_Store2GG_ack);
  // reading from global-memory location
  ...
}

It seems adding a fence in the writing kernel doesn't work,

so, what would be a possible solution for this case?

Thank you,

Leonardo