Hi Rui, so, what does your software /do/ to transmit samples? What is the sampling rate you're working at?
U and L are, as you noted, usually caused by computational insufficiency of the computing platform, but that might have many reasons, not only CPU. Best regards, Marcus On 07/30/2017 05:06 PM, Rui ZOU wrote: > Hi there, > > I'm using USRP X310 and the host is Dell OptiPlex 7040. The > application is built using GNURadio companion 3.7.10.1 > trying to transmit using both the daughter boards. > > When two channels transmit the same file, the transmission can last > for a while before producing U and L and get stuck. When transmit two > different files, U and L come up instantly after starting the > application. The grc files are attached. > > I have read this page > https://files.ettus.com/manual/page_usrp_x3x0_config.html > <https://files.ettus.com/manual/page_usrp_x3x0_config.html> regarding > U and L, tried the possible configurations to get over this, but failed. > > The CPU information (obtained using lshw in Ubuntu 16.04) of the host > is shown below. > > *-cpu > description: CPU > product: Intel(R) Core(TM) i7-6700 CPU @ 3.40GHz > vendor: Intel Corp. > physical id: 18 > bus info: cpu@0 > version: Intel(R) Core(TM) i7-6700 CPU @ 3.40GHz > slot: Socket 0 > size: 3945MHz > capacity: 4200MHz > width: 64 bits > clock: 100MHz > capabilities: x86-64 fpu fpu_exception wp vme de pse tsc msr > pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx > fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp constant_tsc art > arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf > tsc_known_freq pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 > ssse3 sdbg fma cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic movbe popcnt > tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm 3dnowprefetch > epb intel_pt tpr_shadow vnmi flexpriority ept vpid fsgsbase tsc_adjust > bmi1 hle avx2 smep bmi2 erms invpcid rtm mpx rdseed adx smap > clflushopt xsaveopt xsavec xgetbv1 xsaves dtherm ida arat pln pts hwp > hwp_notify hwp_act_window hwp_epp cpufreq > configuration: cores=4 enabledcores=4 threads=8 > > Regards, > > Rui > > > _______________________________________________ > Discuss-gnuradio mailing list > Discuss-gnuradio@gnu.org > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
_______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
