Memory issue in superconductivity calculations with EPW v5.3
Posted: Sat Nov 14, 2020 4:23 pm
Dear all:
For future reference, I reposted below the question from Miao Gao (AgentZero) and its answer from Hari Paudyal (hpaudya1).
Sincerely,
H. Lee
[Question from Miao Gao (AgentZero)]
For future reference, I reposted below the question from Miao Gao (AgentZero) and its answer from Hari Paudyal (hpaudya1).
Sincerely,
H. Lee
[Question from Miao Gao (AgentZero)]
[Answer from Hari Paudyal (hpaudya1)]Dear Dr. Lee,
I download the develop version on 12th September. But I found that there is a minor bug in this developed version when solving the anisotropic Eliashberg equations. The memory required by the program gradually increases with the aggrandizement of the temperature. Finally, epw crashes due to insufficient memory. Some outputs are as follows. As we see, the memory required per pool is 0.48 GB, 1.41 GB, and 6.96 GB for 44 K, 45 K, and 51 K, respectively. Could you please tell me how to fix this bug?
Best wishes,
Miao Gao
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temp( 1) = 44.00000 K
Solve anisotropic Eliashberg equations on imaginary-axis
Total number of frequency points nsiw( 1) = 63
Cutoff frequency wscut = 1.5128
Size of allocated memory per pool: ~= 0.4826 Gb
...
temp( 2) = 45.00000 K
Solve anisotropic Eliashberg equations on imaginary-axis
Total number of frequency points nsiw( 2) = 62
Cutoff frequency wscut = 1.5228
Size of allocated memory per pool: ~= 1.4100 Gb
...
temp( 8) = 51.00000 K
Solve anisotropic Eliashberg equations on imaginary-axis
Total number of frequency points nsiw( 8) = 54
Cutoff frequency wscut = 1.5049
Size of allocated memory per pool: ~= 6.6926 Gb
Size of allocated memory per pool: ~= 6.7094 Gb
Size of allocated memory per pool: ~= 6.9647 Gb
Hi Miao,
Yes, you are right. There was a problem in memory release while solving anisotropic Eliashberg equations in the dev. versions from 8th Sep to 30th Sep, and unfortunately you used in 12th Sep. After this, we have fixed the issue. Please consider using the latest version.
Happy EPWing,
Hari Paudyal