Embedded Systems Conference
Breaking News
Comments
Newest First | Oldest First | Threaded View
DrFPGA
User Rank
Author
re: 1,000 processors on a Xilinx FPGA
DrFPGA   1/12/2011 1:57:40 AM
NO RATINGS
Seems like it's time to start a definition above LUT for these types of processors. Maybe 4004 equivaents? Remember those?

Sanjib.A
User Rank
Author
re: 1,000 processors on a Xilinx FPGA
Sanjib.A   1/10/2011 6:16:05 PM
NO RATINGS
I do not agree to the statement "FPGAs are not used within standard computers because they are fairly difficult to program". FPGAs might not be used in personal computers, but they are extensively used in industrial computers are embedded systems. I don't think it is difficult for the hardware engineers. I am interested to know how much of FPGA resource (logic cells or gates) were consumed by one of these 1000 core and what was the total resource consumption by all of the 1000 cores?

Etmax
User Rank
Author
re: 1,000 processors on a Xilinx FPGA
Etmax   1/5/2011 11:29:41 PM
NO RATINGS
very valid point

krisi
User Rank
Author
re: 1,000 processors on a Xilinx FPGA
krisi   1/5/2011 2:44:41 PM
NO RATINGS
As most people above pointed out this comparison between 1,000 cores on FPGA vs. standalone CPU is apple to oranges. I think the title is misleading, not every hardware core is a microprocessor. The title seems to convey a notion that someone implemented 1,000 ARM-like cores on one FPGA. What bothers me here that titles like this hype the story way too much beyond its significance...Kris P.s I have nothing against FPGA, they are very useful and command increasing market share displacing many ASICs. But they don't need more hype.

sharps_eng
User Rank
Author
re: 1,000 processors on a Xilinx FPGA
sharps_eng   1/4/2011 10:55:02 PM
NO RATINGS
The computationally-bound part of MPEG is when searching the area around a macroblock for matches with a pixel group. The better the search, the more matches, and the more efficient the compression - which is the point of the exercise. That is a good example of a benchmark because it is so darned awkward to speed up, nothing short of brute force will do it currently.

eryksun
User Rank
Author
re: 1,000 processors on a Xilinx FPGA
eryksun   1/4/2011 10:00:31 PM
NO RATINGS
According to their paper from last year, each RC (reconfigurable cell) in the MORA (multimedia oriented reconfigurable architecture) SIMD processing array is an 8-bit PIM (processor in memory) with 256 bytes of block RAM, two input ports, and two output ports. Each RC has a PE (processing element) that computes 8-bit fixed point arithmetic, as well as logical, shifting, and comparison operations. A controller handles asynchronous handshaking between upstream and downstream RCs. They created a C++ DSL (domain specific language) to program the RCs at a high level of abstraction. For example, an 18-line implementation written in their C++ DSL expands to 16,803 lines of VHDL. In their paper from last year they implemented an 8-bit DCT on the Virtex-4 LX200. It used 22 RCs and 3,368 Virtex logic slices and executed in 200 cycles at 100 MHz. They could squeeze 25 copies of this DCT into the LX200, which by my calculations would yield 12.5 MB/s (11.92 MiB/s). I think they've since switched to the Virtex-4 SX (signal processing model) and possibly optimized for the greater number of XtremeDSP slices rather than implementing every PE with logic cells. That said, the reported throughput of 5 GiB/s makes me wonder which algorithm "central to MPEG decoding" they actually implemented.

paul.moody
User Rank
Author
re: 1,000 processors on a Xilinx FPGA
paul.moody   1/4/2011 9:19:59 PM
NO RATINGS
Not so silly .... The MPEG algorithm will/should obviously run best on dedicated hardware so comparing to any sort of general purpose CPU whether 1 or 1000 is academic. It is right to compare the performance of the 1000 cpu core to the desktop in this task for comparative analysis of a "CPU intensive" task.

eewiz
User Rank
Author
re: 1,000 processors on a Xilinx FPGA
eewiz   1/4/2011 5:27:15 PM
NO RATINGS
@ Frank. Exactly. I thought the comparison with desktop PC was silly. The least thing they should do is to get a traditional MPEG decoder ASIC and compare performance with it. BTW about the 1000 cores, are they General Purpose CPU cores like ARM/Mips?? To me it sounds more like limited version CPU with dedicated HW only for a few functions.

old account Frank Eory
User Rank
Author
re: 1,000 processors on a Xilinx FPGA
old account Frank Eory   1/4/2011 3:29:29 PM
NO RATINGS
1,000 cores on an FPGA is impressive, but from an application perspective, what they built was a hardware accelerator for MPEG decoding. Rather than compare its performance to software decoding of MPEG on a top-end desktop computer, it would be nice to see how this 1,000 core solution compares with more traditional hardware acclelators for MPEG decoding.



Radio
LATEST ARCHIVED BROADCAST
Overview: Battle-hardened veterans of the electronics industry have heard of the “connected car” so often that they assume it’s a done deal. But do we really know what it takes to get a car connected and what its future entails? Join EE Times editor Junko Yoshida as she moderates a panel of movers and shakers in the connected car business. Executives from Cisco, Siemens and NXP will share ideas, plans and hopes for connected cars and their future. After the first 30 minutes of the radio show, our listeners will have the opportunity to ask questions via live online chat.
Flash Poll
Like Us on Facebook

Datasheets.com Parts Search

185 million searchable parts
(please enter a part number or hit search to begin)
Special Video Section
LED lighting is an important feature in today’s and future ...
Active balancing of series connected battery stacks exists ...
After a four-year absence, Infineon returns to Mobile World ...
A laptop’s 65-watt adapter can be made 6 times smaller and ...
An industry network should have device and data security at ...
The LTC2975 is a four-channel PMBus Power System Manager ...
In this video, a new high speed CMOS output comparator ...
The LT8640 is a 42V, 5A synchronous step-down regulator ...
The LTC2000 high-speed DAC has low noise and excellent ...
How do you protect the load and ensure output continues to ...
General-purpose DACs have applications in instrumentation, ...
Linear Technology demonstrates its latest measurement ...
10:29
Demos from Maxim Integrated at Electronica 2014 show ...
Bosch CEO Stefan Finkbeiner shows off latest combo and ...
STMicroelectronics demoed this simple gesture control ...
Keysight shows you what signals lurk in real-time at 510MHz ...
TE Connectivity's clear-plastic, full-size model car shows ...
Why culture makes Linear Tech a winner.
Recently formed Architects of Modern Power consortium ...
Specially modified Corvette C7 Stingray responds to ex Indy ...