OpenSparc used in a multi processor platform?

Hi,
I'd like to know if it is possible to implement two OpenSparcT1 into two different FPGAs so as to have a multiprocessor platform. Is there a pre-built platform that handles memories, communication between processors and between memories and processors and all software partitionning for the applications to be run on the processors?
Thanks for answering,
Regards.

The current design assumes the OpenSPARC board (ML505-XC5VLX110T). So the pinout and everything is set assuming that platform. If you go to another platform, you'll need to make changes to work with that platform. Among other things, you may need to use a different memory controller, or at least compile the memory controller with different parameters. Then you'll need to figure out how to communicate between the two OpenSPARC cores. If the FPGA is large enough to fit two OpenSPARC cores, then the communication between the cores gets easier. Otherwise, you'll have to evaluate what options you have on the target platform for communicating between two FPGAs on a board, or between two Boards. It may be that the Xilinx Aurora block may still work, even though it is running over a different physical interface. Of course, if your platform is an FPGA from a different manufacturer, you'll have to start from the beginning with all-new IP.
The current two core system is implemented with one core on each FPGA board. On each board, the bit file includes the OpenSPARC core, the Xilinx MicroBlaze controller, memory controller, serial port, and the Aurora interface, which connects to the other board. Different software is run on the board, however. On the slave board, the firmware simply forwards memory requests to the master board. Memory on this board is mostly unused, with only a small part being used for the MicroBlaze code and data. On the Master board, the firmware processes all memory requests, from the local core, as well as the remote core. On this board, memory is partitioned with a small part being used for the MicroBlaze code, about half being used for the OpenSPARC memory space, and the other half being used for the OpenSPARC RAM disk image.
The next question was about runtime scheduling of an executable. If the executable has only a single thread of execution, it will run on one core, one hardware thread, and cannot be partitioned between two cores, or even two hardware threads. If some mechanism has been used to create multi-threaded execution in the program (like explicit programming using pthreads, or maybe OpenMP), then at run-time, the operating system (OpenSolaris) will schedule the different threads of the program onto different hardware threads or different cores. If you try to run a program directly under Hypervisor, without an operating system, then all the partitioning would have to be done explicitly in the program itself.
Hope this helps,
formalGuy

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Jim Ewing wrote:
>
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>
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OpenSparc used in a multi processor platform?

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