there is something strange with einsteinbinary 1.39

The boinc manager says, the process is using 1 CPU and 1 GPU. The Website tells me it is Binary Radio Pulsar Search (Perseus Arm Survey) v1.39 (BRP5-cuda32-nv270). ps tells a bit more:

ps aux | grep einst
boinc 30718 8.0 4.2 194964 65932 ? SNl 08:20 7:26 ../../projects/einstein.phys.uwm.edu/einsteinbinary_BRP5_1.39_x86_64-pc-linux-gnu__BRP5-cuda32-nv270 -i PA0008_007D1_34.bin4 -i PA0008_007D1_35.bin4 -t rand_PAS.bank.v3 -l PA0008_007D1.zap -o results.cand0 -o results.cand1 -c status.cpt -A 0.04 -P 3.0 -f 175.0 -W -z --device 0

top tells me that the process is using only the GPU (there are only a few procent CPU for this task).

top - 09:54:47 up 17 days, 18:38, 1 user, load average: 3.04, 3.06, 3.01
Tasks: 82 total, 4 running, 78 sleeping, 0 stopped, 0 zombie
%Cpu(s): 0.2 us, 1.8 sy, 75.2 ni, 22.5 id, 0.2 wa, 0.0 hi, 0.2 si, 0.0 st
KiB Mem: 1541220 total, 1519228 used, 21992 free, 119252 buffers
KiB Swap: 506008 total, 8836 used, 497172 free, 943304 cached

PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
26468 boinc 39 19 134m 98m 1348 R 100.1 6.5 220:52.17 wcgrid_faah_7.1
15143 boinc 39 19 147m 110m 1348 R 99.8 7.3 560:54.73 wcgrid_faah_7.1
24734 boinc 39 19 333m 104m 9.8m R 99.8 6.9 274:59.81 wcgrid_cep2_qch
30718 boinc 39 19 196m 64m 29m S 8.0 4.3 7:32.32 einsteinbinary_
5611 boinc 20 0 130m 16m 5864 S 0.7 1.1 5:53.15 boinc

On my 4 core system there is a load of 3, not 4 as one would expect, and there are around 25% of CPU idle.

It looks as the 1.39 claims one CPU but does not use it.
Stephan