For CosmoMC, I have set the num_threads such as 8, 24, etc. and it ran well at beginning. However, when it had been going to converge down, for example, R-1 from about 50 to 10 or less, sometimes it would run only with one thread rather than what I had set. But if R-1 remained around a large number and did not go down, it would not happen. Even if I stopped running and restarted the chains with checkpoints, it would happen again.
Since it ran with one thread, it was quite inefficient. I have no idea to deal with the problem.
Thanks advanced.
Problem when running CosmoMC with several threads.
Problem when running CosmoMC with several threads.
Everything went well at beginning, but it could never stop and only one chain would continue. I have tried lots of times and it happened every time.
Chain:2 drag accpt: 0.4499022 fast/slow 142.6955 slow: 4273
Chain:7 drag accpt: 0.4695652 fast/slow 144.7206 slow: 4231
Chain:4 drag accpt: 0.4498346 fast/slow 143.8469 slow: 4265
Chain:5 drag accpt: 0.4810015 fast/slow 144.7060 slow: 4242
Chain:3 drag accpt: 0.4287599 fast/slow 144.3663 slow: 4273
Chain:6 drag accpt: 0.4420122 fast/slow 146.0141 slow: 4255
Chain:0 drag accpt: 0.4298741 fast/slow 143.0158 slow: 4316
Chain:2 drag accpt: 0.4509341 fast/slow 142.6484 slow: 4326
Chain:7 drag accpt: 0.4688503 fast/slow 144.6615 slow: 4298
Chain:5 drag accpt: 0.4818754 fast/slow 144.6505 slow: 4292
Chain:4 drag accpt: 0.4500000 fast/slow 143.7895 slow: 4328
Chain:1 drag accpt: 0.4451613 fast/slow 142.5981 slow: 4354
Chain:3 drag accpt: 0.4297808 fast/slow 144.3404 slow: 4330
Chain:6 drag accpt: 0.4417254 fast/slow 146.0000 slow: 4304
Chain:2 drag accpt: 0.4529024 fast/slow 142.6506 slow: 4370
Chain 3 MPI communicating
Chain 6 MPI communicating
Chain 2 MPI communicating
Chain 8 MPI communicating
Chain 5 MPI communicating
Chain 7 MPI communicating
Chain 4 MPI communicating
Chain 1 MPI communicating
Current convergence R-1 = 21.13658 chain steps = 4689
slow changes 4393 power changes 0
updating proposal density
Chain:0 drag accpt: 0.4268422 fast/slow 142.8537 slow: 4409
Chain:5 drag accpt: 0.4776056 fast/slow 144.5816 slow: 4350
Chain:7 drag accpt: 0.4665826 fast/slow 144.4332 slow: 4365
Chain:2 drag accpt: 0.4536862 fast/slow 142.6120 slow: 4420
Chain:6 drag accpt: 0.4394710 fast/slow 145.8835 slow: 4361
Chain:4 drag accpt: 0.4435058 fast/slow 143.5266 slow: 4438
Chain:5 drag accpt: 0.4750000 fast/slow 144.5144 slow: 4409
Chain:7 drag accpt: 0.4655493 fast/slow 144.3880 slow: 4428
Chain:6 drag accpt: 0.4409136 fast/slow 145.7571 slow: 4462
Chain:4 drag accpt: 0.4394471 fast/slow 143.4757 slow: 4526
Chain:2 drag accpt: 0.4474002 fast/slow 142.5385 slow: 4557
Chain:5 drag accpt: 0.4744526 fast/slow 144.4235 slow: 4508
Chain:7 drag accpt: 0.4670441 fast/slow 144.2503 slow: 4527
Chain:0 drag accpt: 0.4166667 fast/slow 142.7983 slow: 4576
Chain:3 drag accpt: 0.4195804 fast/slow 144.0562 slow: 4556
Chain:6 drag accpt: 0.4370629 fast/slow 145.6869 slow: 4535
Chain:5 drag accpt: 0.4746645 fast/slow 144.4093 slow: 4556
Chain:2 drag accpt: 0.4467832 fast/slow 142.5396 slow: 4613
Chain:7 drag accpt: 0.4662283 fast/slow 144.2381 slow: 4583
Chain:4 drag accpt: 0.4306220 fast/slow 143.4334 slow: 4631
Chain:3 drag accpt: 0.4154958 fast/slow 144.0475 slow: 4628
Chain:5 drag accpt: 0.4738401 fast/slow 144.3897 slow: 4601
Chain:6 drag accpt: 0.4363636 fast/slow 145.6216 slow: 4598
Chain:2 drag accpt: 0.4460094 fast/slow 142.5211 slow: 4665
Chain:0 drag accpt: 0.4123506 fast/slow 142.7958 slow: 4687
Chain:5 drag accpt: 0.4723032 fast/slow 144.3572 slow: 4647
Chain:7 drag accpt: 0.4627099 fast/slow 144.0715 slow: 4674
Chain:6 drag accpt: 0.4354383 fast/slow 145.5636 slow: 4658
Chain:3 drag accpt: 0.4124116 fast/slow 143.9662 slow: 4702
Chain:2 drag accpt: 0.4448296 fast/slow 142.5122 slow: 4729
Chain:4 drag accpt: 0.4271504 fast/slow 143.4003 slow: 4712
Chain:5 drag accpt: 0.4726225 fast/slow 144.3325 slow: 4701
Chain:7 drag accpt: 0.4606526 fast/slow 144.0229 slow: 4721
Chain:6 drag accpt: 0.4354298 fast/slow 145.5126 slow: 4711
Chain:2 drag accpt: 0.4435178 fast/slow 142.4737 slow: 4777
Chain:0 drag accpt: 0.4074505 fast/slow 142.7434 slow: 4798
Chain:7 drag accpt: 0.4583176 fast/slow 143.9530 slow: 4766
Chain:5 drag accpt: 0.4734741 fast/slow 144.3333 slow: 4753
Chain:2 drag accpt: 0.4437371 fast/slow 142.4565 slow: 4826
Chain:6 drag accpt: 0.4352617 fast/slow 145.4276 slow: 4771
Chain:3 drag accpt: 0.4067991 fast/slow 143.8855 slow: 4813
Chain:4 drag accpt: 0.4214923 fast/slow 143.4026 slow: 4819
Chain:7 drag accpt: 0.4572491 fast/slow 143.9483 slow: 4821
Chain:2 drag accpt: 0.4431315 fast/slow 142.4039 slow: 4882
Chain:6 drag accpt: 0.4347826 fast/slow 145.3592 slow: 4825
Chain:5 drag accpt: 0.4706761 fast/slow 144.2605 slow: 4833
Chain:7 drag accpt: 0.4562111 fast/slow 143.8774 slow: 4877
Chain:0 drag accpt: 0.4009789 fast/slow 142.6619 slow: 4925
Chain:6 drag accpt: 0.4354059 fast/slow 145.3331 slow: 4872
Chain:5 drag accpt: 0.4713494 fast/slow 144.2162 slow: 4876
Chain:4 drag accpt: 0.4142121 fast/slow 143.2860 slow: 4913
Chain:3 drag accpt: 0.4023096 fast/slow 143.7561 slow: 4916
Chain:2 drag accpt: 0.4398190 fast/slow 142.3366 slow: 4959
Chain:7 drag accpt: 0.4542996 fast/slow 143.8334 slow: 4933
Chain:6 drag accpt: 0.4357067 fast/slow 145.2932 slow: 4925
Chain:5 drag accpt: 0.4709748 fast/slow 144.1521 slow: 4931
Chain:0 drag accpt: 0.3983035 fast/slow 142.5754 slow: 5026
Chain:2 drag accpt: 0.4376445 fast/slow 142.2540 slow: 5023
Chain:4 drag accpt: 0.4094092 fast/slow 143.1566 slow: 4999
Chain:7 drag accpt: 0.4539790 fast/slow 143.7894 slow: 4985
Chain:6 drag accpt: 0.4362299 fast/slow 145.2398 slow: 4979
Chain:5 drag accpt: 0.4697624 fast/slow 144.1359 slow: 4997
Chain:2 drag accpt: 0.4373024 fast/slow 142.1742 slow: 5068
Chain:7 drag accpt: 0.4539856 fast/slow 143.7530 slow: 5040
Chain:6 drag accpt: 0.4368175 fast/slow 145.2239 slow: 5025
Chain:3 drag accpt: 0.3941685 fast/slow 143.5896 slow: 5088
Chain:5 drag accpt: 0.4689998 fast/slow 144.0590 slow: 5052
Chain:4 drag accpt: 0.4041288 fast/slow 143.1004 slow: 5090
Chain:2 drag accpt: 0.4358354 fast/slow 142.0540 slow: 5126
Chain:7 drag accpt: 0.4537552 fast/slow 143.6663 slow: 5097
Chain:6 drag accpt: 0.4370929 fast/slow 145.1786 slow: 5074
Chain:0 drag accpt: 0.3940266 fast/slow 142.5027 slow: 5150
Chain:5 drag accpt: 0.4658873 fast/slow 143.9904 slow: 5116
Chain:2 drag accpt: 0.4360465 fast/slow 142.0403 slow: 5186
Chain:7 drag accpt: 0.4518227 fast/slow 143.6259 slow: 5149
Chain:6 drag accpt: 0.4371400 fast/slow 145.1054 slow: 5125
Chain:4 drag accpt: 0.3981623 fast/slow 143.0283 slow: 5203
Chain:2 drag accpt: 0.4350025 fast/slow 142.0036 slow: 5237
Chain:7 drag accpt: 0.4505569 fast/slow 143.5708 slow: 5200
Chain:3 drag accpt: 0.3881119 fast/slow 143.4442 slow: 5221
Chain:5 drag accpt: 0.4644762 fast/slow 143.9433 slow: 5182
Chain:0 drag accpt: 0.3920876 fast/slow 142.4329 slow: 5251
Chain:6 drag accpt: 0.4371127 fast/slow 145.0675 slow: 5184
Chain:2 drag accpt: 0.4355081 fast/slow 141.9536 slow: 5285
Chain:7 drag accpt: 0.4515050 fast/slow 143.5215 slow: 5246
Chain:6 drag accpt: 0.4361474 fast/slow 144.9983 slow: 5238
Chain:3 drag accpt: 0.3871967 fast/slow 143.4051 slow: 5292
Chain:2 drag accpt: 0.4365801 fast/slow 141.9290 slow: 5328
Chain:0 drag accpt: 0.3892733 fast/slow 142.3729 slow: 5336
Chain:7 drag accpt: 0.4510905 fast/slow 143.4601 slow: 5295
Chain:4 drag accpt: 0.3932305 fast/slow 142.8963 slow: 5321
Chain:6 drag accpt: 0.4344289 fast/slow 145.0026 slow: 5306
Chain:2 drag accpt: 0.4354208 fast/slow 141.8970 slow: 5397
Chain:3 drag accpt: 0.3839677 fast/slow 143.2028 slow: 5375
Chain:7 drag accpt: 0.4501713 fast/slow 143.4138 slow: 5357
Chain:0 drag accpt: 0.3828073 fast/slow 142.3322 slow: 5424
Chain:6 drag accpt: 0.4352733 fast/slow 144.9320 slow: 5353
Chain:4 drag accpt: 0.3919007 fast/slow 142.8141 slow: 5405
Chain:2 drag accpt: 0.4348526 fast/slow 141.8599 slow: 5460
Chain:7 drag accpt: 0.4500000 fast/slow 143.4031 slow: 5416
Chain:3 drag accpt: 0.3812510 fast/slow 143.1440 slow: 5457
Chain:6 drag accpt: 0.4347826 fast/slow 144.8695 slow: 5419
Chain:0 drag accpt: 0.3746959 fast/slow 142.3529 slow: 5495
Chain:7 drag accpt: 0.4506232 fast/slow 143.3901 slow: 5460
Chain:2 drag accpt: 0.4351985 fast/slow 141.8128 slow: 5508
Chain:4 drag accpt: 0.3902988 fast/slow 142.8188 slow: 5496
Chain 8 MPI communicating
Chain 7 MPI communicating
Chain 3 MPI communicating
Chain 5 MPI communicating
Chain 4 MPI communicating
Chain:0 drag accpt: 0.3689688 fast/slow 142.3378 slow: 5601
Chain:0 drag accpt: 0.3624962 fast/slow 142.1080 slow: 5750
Chain:0 drag accpt: 0.3605227 fast/slow 142.0561 slow: 5850
Chain:0 drag accpt: 0.3596803 fast/slow 142.0228 slow: 5919
Chain:0 drag accpt: 0.3565217 fast/slow 141.9303 slow: 6025
Chain:0 drag accpt: 0.3520430 fast/slow 141.9188 slow: 6155
Chain:0 drag accpt: 0.3463441 fast/slow 141.8962 slow: 6320
Chain:0 drag accpt: 0.3428802 fast/slow 141.8466 slow: 6435
Chain:0 drag accpt: 0.3392505 fast/slow 141.8550 slow: 6551
Chain:0 drag accpt: 0.3358209 fast/slow 141.7403 slow: 6681