Hello,

I'm looking to use the ClustSim option in 3dttest++ to do some corrections for partial axial coverage resting state 7T data. I keep getting an error that says "dataset grid too big--must recompile to use shorts as indexes" and then the program crashes. Do you think this has to do with the fact that this is 7T data?

My command was:

3dttest++ -setA AMY_CEN {insert subjects here} -mask func_mask.nii -ClustSim -covariates Q_scores_female.1D -prefix AMY_CEN_seed_female_ClustSimTest.nii

*The AMY_CEN_seed_female_ClustSimTest.nii file is output and has the covariate data. I also see some of the intermediate .sdat files and have the *.5percent.txt file too.

The terminal output is:

++ 3dttest++: AFNI version=AFNI_17.2.09 (Aug 22 2017) [64-bit]
++ Authored by: Zhark++
++ option -setA :: processing as LONG form (label label dset label dset ...)
++ 3051791 voxels in -mask dataset
++ Number of -Clustsim threads set to 10
+ Default clustsim prefix set to 'TT.8ZkNZHzA25g'
++ Covariates file: 3 columns, each with 21 rows
+ Covariate column labels: ID;IUS;STAI
+ Found 2 numeric columns: IUS STAI
++ loading covariates
++ loading -setA datasets
*+ WARNING: 3dttest++ -setA :: 133 vectors are constant
++ Memory usage now = 641,076,188 (641 million [mega])
++ t-testing:0123456789.0123456789.0123456789.0123456789.0123456789.!
+ skipped 133 voxels completely for having constant data
++ ---------- End of analyses -- freeing workspaces ----------
++ Memory usage now = 1,874,289,848 (1.9 billion [giga])
++ Creating FDR curves in output dataset
++ Smallest FDR q [1 AMY_CEN_Zscr] = 1.15845e-09
*+ WARNING: Smallest FDR q [3 AMY_CEN_IUS_Zscr] = 0.918285 ==> few true single voxel detections
*+ WARNING: Smallest FDR q [5 AMY_CEN_STAI_Zscr] = 0.999897 ==> few true single voxel detections
+ Added 3 FDR curves to dataset
++ Output dataset ./AMY_CEN_seed_female_ClustSimTest.nii
++ Output dataset ./TT.8ZkNZHzA25g.resid.nii
++ cprefix[0] = ./AMY_CEN_seed_female_ClustSimTest.nii
++ ================ Starting -ClustSim calculations ================
+ === temporary files will have prefix TT.8ZkNZHzA25g ===
+ === running 10 -randomsign jobs (1000 iterations per job) ===
+ === creating 61,035,820,000 (61 billion [giga]) bytes of pseudo-data in .sdat files ===
+ --- 3dClustSim reads .sdat files to compute cluster-threshold statistics ---
+ --- there is 67,662,475,264 (68 billion [giga]) bytes of memory on your system ---
*+ WARNING: --- runs may be slow (or crash) due to memory needs :( ---
++ 3dttest++: AFNI version=AFNI_17.2.09 (Aug 22 2017) [64-bit]
++ Authored by: Zhark++
++ 3051791 voxels in -mask dataset
++ Covariates file: 3 columns, each with 21 rows
+ Covariate column labels: ID;IUS;STAI
+ Found 2 numeric columns: IUS STAI
++ option -setA :: processing as LONG form (label label dset label dset ...)
++ random seeds are 1637391400 1951550665
++ loading covariates
++ opened file ./TT.8ZkNZHzA25g.0000.sdat for output
++ loading -setA datasets
*+ WARNING: 3dttest++ -setA :: 133 vectors are constant
++ Memory usage now = 406,866,408 (407 million [mega])
++ t-test randomsign:0123456789.0123456789.0123456789.0123456789.0123456789.!
++ saving main effect t-stat MIN/MAX values in ./TT.8ZkNZHzA25g.0000.minmax.1D
++ output short-ized file ./TT.8ZkNZHzA25g.0000.sdat
+ ===== simulation jobs have finished (22557.1 s elapsed) =====
++ Global % FPR points for simulated z-stats:
4.967 = 1-sided 9% FPR A
5.164 = 2-sided 9% FPR A
5.005 = 1-sided 8% FPR A
5.196 = 2-sided 8% FPR A
5.046 = 1-sided 7% FPR A
5.234 = 2-sided 7% FPR A
5.088 = 1-sided 6% FPR A
5.269 = 2-sided 6% FPR A
5.137 = 1-sided 5% FPR A
5.313 = 2-sided 5% FPR A
5.196 = 1-sided 4% FPR A
5.370 = 2-sided 4% FPR A
5.269 = 1-sided 3% FPR A
5.433 = 2-sided 3% FPR A
5.370 = 1-sided 2% FPR A
5.513 = 2-sided 2% FPR A
5.513 = 1-sided 1% FPR A
5.671 = 2-sided 1% FPR A
+ [above results also in file TT.8ZkNZHzA25g.A.5percent.txt]
+ ===== starting 3dClustSim A: elapsed = 22603.1 s =====
++ 3dClustSim: AFNI version=AFNI_17.2.09 (Aug 22 2017) [64-bit]
++ Authored by: RW Cox and BD Ward
++ Loading -insdat datasets
** FATAL ERROR: dataset grid too big -- must recompile to use shorts as indexes :(
** Program compile date = Aug 22 2017
** FATAL ERROR: ===== 3dClustSim command failed (( =====
** Program compile date = Aug 22 2017






Thanks for your help!

Carissa