28 • Installing Xtium-CL MX4 Xtium-CL MX4 User's Manual
Host Computer Frame Buffer Memory Limitations
When planning a Sapera application and its host frame buffers used, plus other Sapera memory
resources, do not forget the Windows operating system memory needs.
A Sapera application using the preferred scatter gather buffers could consume most of the
remaining system memory, with a large allocation of frame buffers. If using frame buffers allocated
as a single contiguous memory block, Windows will limit the allocation dependent on the installed
system memory. Use the Buffer menu of the Sapera Grab demo program to allocate host buffer
memory until an error message signals the limit allowed by the operating system used.
Contiguous Memory for Sapera Messaging
The current value for Sapera messaging determines the total amount of contiguous memory
reserved at boot time for messages allocation. This memory space stores arguments when a
Sapera function is called. Increase this value if you are using functions with large arguments, such
as arrays and experience any memory errors.
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