Ucvm2mesh-mpi

We are working on ucvm2mesh-mpi software to confirm it works in ucvmc

Questions that we will resolve

• ucvm2mesh-mpi documentation (look for configuraiton file)
• How can we set origin at center of region (rather than at lower left point)
• What direction is the X axis and Y axis (confirm x is horizontal before rotation)
• Confirm that positive rotation is counter clockwise
• Describe differences in output format mesh file versus grid file
• describe differences in output format for ijk-12, ijk-16, ijk-32 and SORD
• Describe output file formats and locations

small scale ucvm queries

• Define small scale sample problem
• 20 km x 10km x 10k volume
• 1km spacing
• with rotation
• without rotation
• with ucvm2mesh
• with ucvm2mesh-mpi

Example Usage

# List of CVMs to query
ucvmlist=cvmh,bbp1d

# UCVM conf file
ucvmconf=/auto/scec-00/maechlin/t1/conf/ucvm.conf

# Gridding cell centered or vertex
gridtype=CENTER

# Spacing of cells
spacing=2000.0

# Projection
proj=+proj=utm +datum=WGS84 +zone=11
rot=-40.0
x0=-122.3
y0=34.7835
z0=0.0

# Number of cells along each dim
nx=384
ny=248
nz=25

# Partitioning of grid among processors
px=2
py=2
pz=5

# Vs/Vp minimum
vp_min=0
vs_min=0

# Mesh and grid files, format
meshfile=/auto/scec-00/maechlin/ucvm_mpi/mesh_cvmhbbp1d_ijk12_2000m.media
gridfile=/auto/scec-00/maechlin/ucvm_mpi/mesh_cvmhbbp1d_ijk12_2000m.grid
meshtype=IJK-12

# Location of scratch dir
scratch=/scratch

Dumpgrid.py Utility

• dump_grid.py utility reads in grid file and dumps the i j values, and the lat/lon values

<

./dumpgrid.py mesh_bbp1d_ijk12_2000m.grid 384 248

produces

380, 247 : -112.506316, 33.825386
381, 247 : -112.490418, 33.813224
382, 247 : -112.474526, 33.801059
383, 247 : -112.458637, 33.788893

Links to Relevant Information

• La Habra Region Definition
• UCVM2Mesh documentation
• ucvm2mesh manual pages
• UCVMC Wiki Page

Related Entries

• UCVM