GPU folder: auto-correlation matrix and cross-correlation matrix plots

Figure folder: Sigma, Sigma_inv plots, p = 10, CI among p only

032c: Tst9c, 1D SG and SG_inv construction, Matern, CI among p only (non-cross-MRF), SpN + Reg, thres = 1e-3, reg_num = 1e-9 (Test construction joint Sigma and Sigma_inv; p = 6, n = 40; p = 10, n = 400, 600, 800; exact zero percentage CI among p only)

032d: 1D simulation plots functions for non-cross-MRF, C.I. among p only; (Plot joint Sigma and Sigma_inv; p = 6, n = 40)

032e: 1D SG, SG_inv construction, CI among p only (p = 10, n = 40, 400, 600, 800; elapsed system wall time, CI among p only)

032f: SG, SG_inv plots (p = 10)

034b: SG_inv construction, sparse percentage comparison among cross-MRF and non-cross-MRF for Tri-Wave and Wendland; (Percentage of exact-zero entries; elapsed system wall time cross-MRF)

034c: Tst10c, 1D SG_inv construction, cross-MRF, with SpNorm + Reg for b function, b can be chosen; (Joint Sigma_inv plots, p = 6)

034e: CI among n only, Mardia 1988; p =10, n = 400, 600, 800, 1000 (Exact-zero percentage; fully-connected graph reach memory limit)

037: 100 randomly evaluated Sigma_inv generation microbenchmark; (Sigma and Sigma_inv generation time)

046b: generate 1D true processes and noisy data, Tri-Wave and Wendland

046c: generate 2D true processes and noisy data, Tri-Wave and Wendland - consistent relationship between sparsity in uni-SG_inv and joint SG_inv

047b: optimization, Tri-Wave, Tst10c (cross-MRF)

047c: optimization, Wendland, Tst10c (cross-MRF)

048b: co-krig, Tri-Wave, 1 fold C.V. results

048d: co-krig, Wendland, 1 fold C.V. results

049: neg_logL function of non-cross-MRF, TST9d

049b: optimization using 049, Tri-Wave, Wendland

055: 2D inference (neg_logL_2D, optim) for 6 fields in Fig12, Tri-Wave (converged), Wendland (converged)

056: 2D cokrig (pure denoising)

057: Data processing, generate df_Res_log_16_sorted, sorted by Lon (asc), then by Lat (desc); 4 Lon strips

059: TST12 GPU version

060: GPU parallel + optim on 1 CPU

061: GPU parallel + optim on 4 CPUs

062: pure optim parallel on 51 CPUs, no GPU parallelisation

063: CAMS data processing

064a: CAMS data with 060, GPU parallel + optim on 1 CPU, Lon_Strip_1

064b: CAMS data with 060, GPU parallel + optim on 1 CPU, Lon_Strip_4

065a: CAMS one complete construction time for SG, and SG_inv, with GPU off-loading, df_Lon_Strip_1_Sort_new.rds;(real-world data illustration)

066a: CAMS one complete construction time for SG, and SG_inv, solo CPU, df_Lon_Strip_1_Sort_new.rds;(real-world data illustration)