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David Kanter
Guest
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 Posted:
Tue Jan 04, 2005 2:00 am Post subject:
Large open source FPGAs? |
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Hi,
I am interested in doing some performance profiling and benchmarking
using FPGA software. Right now, I am looking for a large open source
FPGA to play around with. Unfortunately, I don't have a good sense of
what constitutes a 'large' FPGA. Right now, I am working with a 35k
gate USB controller that was suggested to me (I believe it's available
through opencores.org). Does anyone have some other suggestions?
Thanks in advance, I would really appreciate some advice and guidance
on the matter.
David Kanter |
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Marius Vollmer
Guest
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| Posted:
Tue Jan 04, 2005 2:41 am Post subject:
Re: Large open source FPGAs? |
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"David Kanter" <dkanter@gmail.com> writes:
| Quote: | Does anyone have some other suggestions?
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You could try LEON, a Sparc processor with AMBA and peripherals:
http://www.gaisler.com,
Direkt link to LEON, but a frame:
http://www.gaisler.com/products/leon2/leon_down.html
--
GPG: D5D4E405 - 2F9B BCCC 8527 692A 04E3 331E FAF8 226A D5D4 E405 |
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Sylvain Munaut
Guest
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| Posted:
Tue Jan 04, 2005 2:42 am Post subject:
Re: Large open source FPGAs? |
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Hi
| Quote: | I am interested in doing some performance profiling and benchmarking
using FPGA software. Right now, I am looking for a large open source
FPGA to play around with. Unfortunately, I don't have a good sense of
what constitutes a 'large' FPGA. Right now, I am working with a 35k
gate USB controller that was suggested to me (I believe it's available
through opencores.org). Does anyone have some other suggestions?
|
Well, "open source FPGA" is an abuse of language, a fpga is a hardware piece.
The "cores" or "IP blocks" you program/load in them are open sources.
If you're just looking for a "big" thing. Look at gaisler leon 3. It's a
complete SoC solution with differents cores in it, you can surely configure
it to become pretty large. And it's also more "polyvalent" since you have
cpu core, memory controller, pci , ...
Sylvain |
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David Kanter
Guest
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| Posted:
Tue Jan 04, 2005 4:06 am Post subject:
Re: Large open source FPGAs? |
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Sylvain Munaut wrote:
| Quote: | Hi
I am interested in doing some performance profiling and
benchmarking
using FPGA software. Right now, I am looking for a large open
source
FPGA to play around with. Unfortunately, I don't have a good sense
of
what constitutes a 'large' FPGA. Right now, I am working with a
35k
gate USB controller that was suggested to me (I believe it's
available
through opencores.org). Does anyone have some other suggestions?
Well, "open source FPGA" is an abuse of language, a fpga is a
hardware piece.
The "cores" or "IP blocks" you program/load in them are open sources.
|
I should have known that; thanks for the pointer. Nothing beats
looking like a n00b...
| Quote: | If you're just looking for a "big" thing. Look at gaisler leon 3.
It's a
complete SoC solution with differents cores in it, you can surely
configure
it to become pretty large. And it's also more "polyvalent" since you
have
cpu core, memory controller, pci , ...
|
That might be interesting. My rationale for looking for something
"big" is that I would like to have reasonably long run times. The USB2
controller I was working with took under a minute to synthesize. One
of the problems is that I would like my workload to be as 'real world'
as possible, and testing EDA tools with tiny chips isn't very
interesting for those who really are using them for work.
I don't really know enough FPGA's to explain, but for an ASIC, I am
pretty sure that the time to do an extraction for a 1mm^2 chip will be
almost entirely uncorrelated to the time for an extraction of similar
quality on a 370mm^2 behemoth. The real issue is trying to get a
realistic workload and my feelings are that most of what I have seen at
opencores.org are 'small'.
Thanks for your help everyone I appreciate the comments!
David Kanter |
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