Re: [USRP-users] B200 FPGA usage between 3.9 and 3.13

2018-10-04 Thread Michael West via USRP-users
Hi Sylvain, You are absolutely correct. We are looking at splitting the axi_packet_gate into a buffer and a packet gate. That should effectively reduce the address FIFO to a reasonable size and reduce the resource usage back to reasonable levels. Regards, Michael On Thu, Oct 4, 2018 at 4:10 AM

Re: [USRP-users] B200 FPGA usage between 3.9 and 3.13

2018-10-04 Thread Sylvain Munaut via USRP-users
Hi Michael, > Thank you for letting us know. That is quite a jump in utilization. We will > take a look when we have some time. > > We did recently make recent bug fixes in axi_packet_gate. It looks like > that, and possibly other changes, inadvertently increased resource > utilization more

Re: [USRP-users] B200 FPGA usage between 3.9 and 3.13

2018-10-03 Thread Michael West via USRP-users
Hi Silvain, Thank you for letting us know. That is quite a jump in utilization. We will take a look when we have some time. We did recently make recent bug fixes in axi_packet_gate. It looks like that, and possibly other changes, inadvertently increased resource utilization more than expected

Re: [USRP-users] B200 FPGA usage between 3.9 and 3.13

2018-10-03 Thread Sylvain Munaut via USRP-users
And the culprit is axi_packet_gate It actually uses so much more BRAMs than the MAP process replaces some of the inferred BRAM by inferred dist ram instead to fit everything in a B200. Not sure why this now needs some much more resources than it did before. Cheers, Sylvain

[USRP-users] B200 FPGA usage between 3.9 and 3.13

2018-10-03 Thread Sylvain Munaut via USRP-users
Hi, Before I spend possibly hours tracing this, I was wondering if someone had an obvious reason for which the FPGA base design size for the B200 increases significantly between 3.9 and 3.13 ? Just a few examples : Number used as Memory: 4004 out of 1107236% Number used as Mem