76 • X64 Xcelera-CL PX4 Reference X64 Xcelera-CL PX4 User's Manual
Memory Error with Area Scan Frame Buffer
Allocation
The memory error message [ Error: "CorXferConnect" <Xfer module> - No memory () ] may occur
when loading a Sapera camera file, or when the application configures a frame buffer for area scan
cameras. The problem is that the X64 Xcelera-CL PX4 does not have enough onboard memory for two
frame buffers.
The X64 Xcelera-CL PX4 when used with area scan cameras, allocates two internal frame buffers in
onboard memory, each equal in size to the acquisition frame buffer. This allocation is automatic at the
driver level. The X64 Xcelera-CL PX4 driver allocates two buffers to ensure that the acquired video
frame is complete and not corrupted in cases where the transfer to host system memory may be
interrupted by other host system processes.
The total size of the two internal frame buffers must be somewhat smaller than the total onboard memory
due to memory overhead required for image transfer management. Also note that the X64 Xcelera-CL
PX4 dual configuration equally divides the onboard memory between the two acquisition modules,
reducing the available memory for the two buffers by half.
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