Re: [casper] Fault LED is switched on when I start the Roach2

Maybe somebody has a clearer recollection than I do, but I think the “fault” LED on ROACH2 boards was a bit unreliable/meaningless as an indicator of an actual fault. HTH, Dave > On Feb 9, 2024, at 00:16, Sivakumar Sivasankar wrote: > > Dear Caspers, > Now the fault led is off. But I

Re: [casper] zcu216_tut_onehundred_gbe.slx

Hi, Mitch, Does this mean that the four ports on the ZCU216 can function as a single 100 GbE interface? If so, then I'll need to amend my response to Ken in a different thread. Thanks, Dave > On Jul 30, 2023, at 22:28, Mitch Burnett wrote: > > Ken, > > If you plan to use fiber you can use

Re: [casper] What model of 100GbE cable should be used with a ZCU216?

Hi, Ken, I don’t have a ZCU216 either, but the specs say it has four SFP28 ports. I don’t know whether the CASPER 100 GbE core can gang those four ports into a single 100 GbE interface, but others on this list should be able to confirm that one way or the other. At the other end of the

Re: [casper] PAPER Correlator bulids gem files

These days it’s probably better to use: git clone https://github.com/david-macmahon/rb-katcp.git Cheers, Dave > On Sep 25, 2022, at 7:54 AM, Wang wrote: > > Hi CASPER， > > I am currently operating as described in the PAPER Correlator

Re: [casper] RA Instruments using CASPER hardware and tools

Also, the “Infrared Spatial Interferometer” (ISI) project started by the late :( Charles Townes uses CASPER hardware. > On Aug 31, 2022, at 3:59 PM, David Harold Edward MacMahon > wrote: > > SERENDIP VI and Alfaburst were spectrometers that used CASPER hardware. It > may

Re: [casper] RA Instruments using CASPER hardware and tools

SERENDIP VI and Alfaburst were spectrometers that used CASPER hardware. It may be more correct to call them two backends for the same spectrometer. These ran at Arecibo. Greenburst is a version of Alfaburst that is at Green Bank. There’s also PhRInGES. Besides being a tortured (b)acronym

Re: [casper] Question of 'PCORE'、'Share_BRAM' and 'Subsystem' block

Hi, Wang, Morag is right about the mask parameter and BRAM sizing relationship. The subsystem you showed is used to provide each frequency channel with its own “equalization” coefficient. In the “round” block, I think “din” and the output of “coeffs” get multiplied together and then the 4

Re: [casper] Help with ROACH2 uboot issue

Hi, Dale, > On Aug 24, 2022, at 1:18 PM, Gary, Dale E wrote: > > > mount -t nfs 192.100.16.206:/srv/roach2_boot/etch /usr/local/ovsasrv > Here I get something potentially useful: > svc: failed to register lockdv1 RPC service (errno 111). Is the rpc-statd service running on the NFS server? On

Re: [casper] Help with ROACH2 uboot issue

to mount /srv/roach2_boot/etch as /. There is a > directory /srv/roach2_boot/etch/dev, but not a /srv/roach2_boot/etch/dev/nfs. > But of course that hasn't changed from the previous working version, so I > don't see how it can be a problem. > > Regards, > Dale > > On Wed, Aug 24, 20

Re: [casper] Help with ROACH2 uboot issue

s any difference. > > Regards, > Dale > > On Tue, Aug 23, 2022 at 8:31 PM David Harold Edward MacMahon > mailto:dav...@berkeley.edu>> wrote: > I notice these excerpts from your u-boot log: > >> TFTP from server 192.100.16.206; our IP address is 192.168.24.121; sen

Re: [casper] Help with ROACH2 uboot issue

ly the result was the same. There may be some different > problem. > > Regards, > Dale > > On Tue, Aug 23, 2022 at 6:42 PM David Harold Edward MacMahon > mailto:dav...@berkeley.edu>> wrote: > I don’t think you need the single quotes in the middle. I think at the

Re: [casper] Help with ROACH2 uboot issue

the ticks? I guess I'll play with it. > > Regards, > Dale > > On Tue, Aug 23, 2022 at 5:55 PM David Harold Edward MacMahon > mailto:dav...@berkeley.edu>> wrote: > Hi, Dale, > > It sounds like you’ve found where to set the `vers=4` option. If that > doesn’t wo

Re: [casper] Help with ROACH2 uboot issue

Hi, Dale, It sounds like you’ve found where to set the `vers=4` option. If that doesn’t work, it’s possible that the ROACH2s don’t support NFSv4. If that's the case (I’m not sure it is), then you may have to look into exporting the root filesystem via NFSv3 instead. I always have to double

Re: [casper] Hola Jack!

It’s possible that the ROACH directories were not migrated to git. I couldn’t find any evidence of a “roach” directory in the history of the casper-astro mlib_devel repo. :( Dave > On Jul 28, 2022, at 11:09 AM, Jack Hickish wrote: > > > > On Thu, 28 Jul 2022 at 18:59, Rolando Paz

Re: [casper] CASPER 2022 workshop: registration payment problems

FWIW, I also tried using a Visa card and it didn't work. Maybe there's some sort of extra authorization step that our US credit cards don't support? Cheers, Dave > On Jul 1, 2022, at 03:23, Adam Isaacson wrote: > > Hi Dan and Mitch, > > My credit card worked. I never had any issues. I used

Re: [casper] ROACH2 to implement F-engine

Hi, Wang, Almost always the step after the channel equalizer is a requantization to fewer bits (typically 4 or 8). You will want to ensure that the data is getting equalized to a level that makes optimal use of the output bits. What constitutes "optimal use" is a rather complicated topic,

Re: [casper] An error occurs when 'exportfs -a' is entered

For one or even a small number of ROACH2s, there probably isn't much advantage to netboot. As the number of boards in the system increases, netboot helps because everything runs the same version always. Also, with the kernel and root filesystem on an SSD, netboot is less prone to

Re: [casper] redpitaya tcpborphserver3 issues

OK, never mind... :P > On Mar 30, 2022, at 17:14, David Harold Edward MacMahon > wrote: > > Hi, Nitika, > > It looks like systemctl thinks tcpborphserver3 ran and exited successfully > (even though exiting probably means it wasn't really successful). Are you > a

Re: [casper] redpitaya tcpborphserver3 issues

Hi, Nitika, It looks like systemctl thinks tcpborphserver3 ran and exited successfully (even though exiting probably means it wasn't really successful). Are you able to start it manually from the command line? That might give you some additional clues about what is happening. I think you

[casper] Re: Help needed with a Hashpipe Error

Hi, Ryan, "Illegal instruction" can happen when the code is compiled with AVX2 or AVX512 instructions enabled, but then runs on a system whose CPU doesn't support those instructions. If you run hashpipe under gdb, you should be able to generate a backtrace when it crashes to identify the bad

Re: [casper] General question about HASHPIPE program

Hi, Ryan, Yes, hashpipe is a framework that dynamically loads a user-supplied "plug-in" (aka shared library or shared object file). These plug-ins provide the application specific functionality for the users pipeline. Plug-ins are specified on the hashpipe command line via the `-p PLUGIN`

Re: [casper] Help to program BRAM blocks.

Hi, Heystek, The CPU/KATCP/CasperFpga data path to the "Shared BRAM" is 32 bits wide, so in the end you will be writing/sending an array of 32 bit integers. The data path on the FPGA side of the "shared BRAM" may be wider (e.g. 64 bits) or narrower (e.g 8 or 16 bits) or the same (i.e. 32

Re: [casper] Tips to speed up simulation

Hi, Sebastian, If you're only changing the inputs (i.e. NOT changing parameters of the CASPER blocks), you might want to consider building a test design that allows you to provide the inputs via a "Shared BRAM" block and reading the output from another "Shared BRAM" block. Then you could