updates tomography file reading, FK coupling and parallel decomposer

[danielpeter]

second try...

[buildbot-princeton]

The files changed do not require a buildbot test. The maintainers can commit these changes.

[codecov-commenter]

Codecov Report

Patch coverage: 69.77% and project coverage change: +0.02 :tada:

Comparison is base (c3783a9) 45.21% compared to head (5464125) 45.24%.

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Additional details and impacted files

```diff @@ Coverage Diff @@ ## devel #1594 +/- ## ========================================== + Coverage 45.21% 45.24% +0.02% ========================================== Files 250 250 Lines 56474 56776 +302 ========================================== + Hits 25535 25688 +153 - Misses 30939 31088 +149 ``` | [Impacted Files](https://codecov.io/gh/SPECFEM/specfem3d/pull/1594?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=SPECFEM) | Coverage Δ | | |---|---|---| | [src/gpu/specfem3D\_gpu\_cuda\_method\_stubs.c](https://codecov.io/gh/SPECFEM/specfem3d/pull/1594?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=SPECFEM#diff-c3JjL2dwdS9zcGVjZmVtM0RfZ3B1X2N1ZGFfbWV0aG9kX3N0dWJzLmM=) | `0.00% <0.00%> (ø)` | | | [src/specfem3D/compute\_interpolated\_dva.f90](https://codecov.io/gh/SPECFEM/specfem3d/pull/1594?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=SPECFEM#diff-c3JjL3NwZWNmZW0zRC9jb21wdXRlX2ludGVycG9sYXRlZF9kdmEuZjkw) | `85.78% <ø> (ø)` | | | [src/specfem3D/compute\_seismograms.f90](https://codecov.io/gh/SPECFEM/specfem3d/pull/1594?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=SPECFEM#diff-c3JjL3NwZWNmZW0zRC9jb21wdXRlX3NlaXNtb2dyYW1zLmY5MA==) | `74.12% <ø> (ø)` | | | [src/specfem3D/create\_color\_image.f90](https://codecov.io/gh/SPECFEM/specfem3d/pull/1594?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=SPECFEM#diff-c3JjL3NwZWNmZW0zRC9jcmVhdGVfY29sb3JfaW1hZ2UuZjkw) | `0.00% <ø> (ø)` | | | [src/specfem3D/compute\_stacey\_acoustic.f90](https://codecov.io/gh/SPECFEM/specfem3d/pull/1594?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=SPECFEM#diff-c3JjL3NwZWNmZW0zRC9jb21wdXRlX3N0YWNleV9hY291c3RpYy5mOTA=) | `32.41% <4.28%> (-26.80%)` | :arrow_down: | | [src/specfem3D/prepare\_timerun.F90](https://codecov.io/gh/SPECFEM/specfem3d/pull/1594?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=SPECFEM#diff-c3JjL3NwZWNmZW0zRC9wcmVwYXJlX3RpbWVydW4uRjkw) | `83.62% <14.28%> (-0.88%)` | :arrow_down: | | [src/specfem3D/compute\_add\_sources\_acoustic.f90](https://codecov.io/gh/SPECFEM/specfem3d/pull/1594?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=SPECFEM#diff-c3JjL3NwZWNmZW0zRC9jb21wdXRlX2FkZF9zb3VyY2VzX2Fjb3VzdGljLmY5MA==) | `53.37% <21.42%> (+0.27%)` | :arrow_up: | | [src/specfem3D/compute\_add\_sources\_viscoelastic.F90](https://codecov.io/gh/SPECFEM/specfem3d/pull/1594?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=SPECFEM#diff-c3JjL3NwZWNmZW0zRC9jb21wdXRlX2FkZF9zb3VyY2VzX3Zpc2NvZWxhc3RpYy5GOTA=) | `42.93% <50.00%> (ø)` | | | [src/decompose\_mesh/module\_mesh.f90](https://codecov.io/gh/SPECFEM/specfem3d/pull/1594?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=SPECFEM#diff-c3JjL2RlY29tcG9zZV9tZXNoL21vZHVsZV9tZXNoLmY5MA==) | `68.68% <62.96%> (+0.15%)` | :arrow_up: | | [src/specfem3D/couple\_with\_injection.f90](https://codecov.io/gh/SPECFEM/specfem3d/pull/1594?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=SPECFEM#diff-c3JjL3NwZWNmZW0zRC9jb3VwbGVfd2l0aF9pbmplY3Rpb24uZjkw) | `75.48% <72.14%> (-4.05%)` | :arrow_down: | | ... and [10 more](https://codecov.io/gh/SPECFEM/specfem3d/pull/1594?src=pr&el=tree-more&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=SPECFEM) | | ... and [1 file with indirect coverage changes](https://codecov.io/gh/SPECFEM/specfem3d/pull/1594/indirect-changes?src=pr&el=tree-more&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=SPECFEM) Help us with your feedback. Take ten seconds to tell us [how you rate us](https://about.codecov.io/nps?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=SPECFEM). Have a feature suggestion? [Share it here.](https://app.codecov.io/gh/feedback/?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=SPECFEM)

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