Sign in
Search fpga-cpu
Subscribe to fpga-cpu
fpga-cpu by Keywords
Altera | CISCifying | IDE | ISA | Java | JHDL | JTAG | LBU | MicroBlaze | PAR | PCI | RISC | SoC | Spartan | Transputers | Verilog | VHDL | Virtex | VLIW | WebPack | Xilinx | Xsoc | YARD-1A
Ads
Discussion Groups
Discussion Groups | FPGA-CPU | Re: xr16 vs. nios
This list is for discussion of the design and implementation of field-programmable gate array based processors and integrated systems. It is also for discussion and community support of the XSOC Project (see http://www.fpgacpu.org/xsoc).
xr16 vs. nios - Jeff Chang - Jul 5 8:13:00 2002
|
Who has made performance comparison for them? Jeff __________________________________________________ |
|
|
(You need to be a member of fpga-cpu -- send a blank email to fpga-cpu-subscribe@yahoogroups.com )
Re: xr16 vs. nios - Veronica Merryfield - Jul 5 12:46:00 2002
|
From: "Jeff Chang" <> > Who has made performance comparison for them? I remember seeing something by Jan in his website's about NIOS but I don't remember seeing anything in terms of comparison. This then leads to a delicate issue of benchmarking. Over the years, it has not gone un-noticed that compiler writers for CPU companies have written their compilers to produce optimised code for benchmarking knowing the benchmark code adhead of time. In more recent years, many manufacturers show mulitple benchmarks, but as with all marketing, they show what they want us to see! This was certainly a problem when I worked with Transputers and was heightend by the architechture having certain features favouring some benchmarks. When it came to using it in a real application, it was way under powered. So, back to Jeff, rather than the simple "what bench mark would you use?", I hope you see that this is a much deeper question, not only involving the CPU, but also the tool chain, the benchamark code and any opitmisation that may have been done in the CPU and the tools for specific benchmarks. Veronica |
(You need to be a member of fpga-cpu -- send a blank email to fpga-cpu-subscribe@yahoogroups.com )
Re: xr16 vs. nios - Ben Franchuk - Jul 5 13:11:00 2002
|
Veronica Merryfield wrote: > So, back to Jeff, rather than the simple "what bench mark would you use?", I > hope you see that this is a much deeper question, not only involving the > CPU, but also the tool chain, the benchamark code and any opitmisation that > may have been done in the CPU and the tools for specific benchmarks. Also you never see the SOURCE for the bewnchmarks too. I know BYTE once did a bunch of benchmarks in small C but I have not been able to find reference to them on the web or source. -- Ben Franchuk - Dawn * 12/24 bit cpu * www.jetnet.ab.ca/users/bfranchuk/index.html |
(You need to be a member of fpga-cpu -- send a blank email to fpga-cpu-subscribe@yahoogroups.com )
Re: xr16 vs. nios - Veronica Merryfield - Jul 5 13:47:00 2002
|
I remember that. I think ".EXE" did one too around the same time because of doubt in benchmarking in the PC arena. I'll ask the ex-editor - he works in the same company I do. ----- Original Message ----- From: "Ben Franchuk" <> To: <> Sent: Friday, July 05, 2002 7:11 PM Subject: Re: [fpga-cpu] xr16 vs. nios > Veronica Merryfield wrote: > > > So, back to Jeff, rather than the simple "what bench mark would you use?", I > > hope you see that this is a much deeper question, not only involving the > > CPU, but also the tool chain, the benchamark code and any opitmisation that > > may have been done in the CPU and the tools for specific benchmarks. > > Also you never see the SOURCE for the bewnchmarks too. > I know BYTE once did a bunch of benchmarks in small C > but I have not been able to find reference to them on > the web or source. > > -- > Ben Franchuk - Dawn * 12/24 bit cpu * > www.jetnet.ab.ca/users/bfranchuk/index.html > > To post a message, send it to: > To unsubscribe, send a blank message to: |
(You need to be a member of fpga-cpu -- send a blank email to fpga-cpu-subscribe@yahoogroups.com )