Matrox Matrox Radient eV-CXP, Installation And Hardware Reference, Page: 26 / 70

26 Chapter 3: Using multiple Matrox Radient eV-CXP boards
Installation of multiple boards
You can install and use multiple Matrox Radient eV-CXP boards in one computer.
Install each additional Matrox Radient eV-CXP board as you installed the first
board (refer to
Chapter 2: Hardware installation ). The number of Matrox
Radient eV-CXP boards that you can install is primarily dependent on the number
of physical slots in your computer, and your BIOS; your BIOS establishes how
many PCIe devices can be mapped to the PCIe memory space of your computer.
Using MIL-Lite, you have to allocate a MIL system for each board and allocate
the resources of each MIL system. For more information, see
MsysAlloc() with
M_SYSTEM_RADIENTCXP in the MIL Reference.
Simultaneous image capture from different
boards
In addition to capturing images from multiple video sources with a single Matrox
Radient eV-CXP board, you can also simultaneously capture images from video
sources attached to multiple Matrox Radient eV-CXP boards. Note that the
number of video sources from which you can simultaneously capture images is
limited by the PCIe chipset on your computer.
The use of a high performance PCIe chipset is necessary to sustain PCIe transfers
to Host memory. Ideally, a PCIe 2.x chipset should be used. A PCIe 2.x Host bus
will optimize the speed of data transmission, and will minimize data loss. The list
of platforms that are known to be compatible with Matrox Radient eV-CXP is
available on the Matrox web site, under the board’s compatibility list.
To measure the effective available bandwidth of the PCIe slot in your computer
with the Matrox Radient eV-CXP board, you can use the RadientCXPBench tool
integrated in the MILConfig utility. As a reference point, capturing from a 2K x
2K, 8-bit, 60 frames/sec video source will require a minimum bandwidth of
240 Mbytes/sec, plus an additional bandwidth margin of approximately 20%, for
a bandwidth of 288 Mbytes/sec.