| Method / sample set | ΔH | ΔS estimate |
|---|---|---|
| uMLIP (PBE sample set) |
— eV/atom
— kJ/mol of atoms
|
—
eV/(atom K)
— J/(mol of atoms K)
|
| PBE |
— eV/atom
— kJ/mol of atoms
|
—
eV/(atom K)
— J/(mol of atoms K)
|
| uMLIP (R2SCAN sample set) |
— eV/atom
— kJ/mol of atoms
|
—
eV/(atom K)
— J/(mol of atoms K)
|
| R2SCAN |
— eV/atom
— kJ/mol of atoms
|
—
eV/(atom K)
— J/(mol of atoms K)
|
ΔH is the liquid-minus-solid value reported by the existing correction workflow. Each uMLIP row uses the sample set matched to that DFT method. Uncertainties are standard errors; — means unavailable.
ΔS is estimated as ΔHuMLIP/Tm,uMLIP. Its propagated uncertainty assumes these two quantities are independent. The current PBE/R2SCAN correction inherits this entropy estimate; it is not an independently calculated DFT entropy.
| Sample set | Cp,solid | Cp,liquid |
|---|---|---|
| uMLIP (PBE sample set) |
— J/(mol of atoms K)
— eV/(atom K)
|
— J/(mol of atoms K)
— eV/(atom K)
|
| uMLIP (R2SCAN sample set) |
— J/(mol of atoms K)
— eV/(atom K)
|
— J/(mol of atoms K)
— eV/(atom K)
|
Values reported in SLUSCHI.out by the correction workflow. These are uMLIP potential-energy–temperature slopes for the PBE/R2SCAN sample sets, not full thermodynamic heat capacities or independent DFT heat capacities. The workflow may substitute the other phase's slope when one is unavailable. Uncertainties are not reported; — means unavailable.
| Vsolid [ų/atom] | Vliquid [ų/atom] | ΔV [ų/atom] |
|---|---|---|
| — | — | — |
=======================================================================================================
Solid and Liquid in Ultra Small Coexistence with Hovering Interfaces (SLUSCHI)
Developed and maintained by Qi-Jun Hong, with early research support from Axel van de Walle (2014-2020)
=======================================================================================================
Generating solid with radius = 14
*** Generate a supercell from the current unitcell ***
The supercell is:
-2.4397014499999976 4.8530344200000002 13.795428599999999
-9.7533533400000003 9.7060688400000004 -5.5187042599999998
-10.729233920000000 -9.7060688400000004 -5.3282000000000004E-004
|a|,|b|,|c|,theta(bc),theta(ac),theta(ab):
14.826 14.825 14.468 87.210 95.601 91.364
In UNIT-cell, number of atoms: 2 1 1 total: 4
Inverse Matrix is:
-1.6949178090663122E-002 -4.2363945842292451E-002 -5.0838534887624007E-002
1.8732422447786990E-002 4.6831056119467473E-002 -4.6831056119467467E-002
6.2900544802704433E-002 -2.3966497668067344E-002 7.4837747332848733E-003
In SUPER-cell, number of atoms: 132 66 66 total: 264
POSCAR_STRCT atoms = 264
Accepted radius = 14 with 264 atoms
====================================================================================================
/data/qhong7/qhong7/sluschi_auto/e98ca468-543d-4ed7-95fb-2367b3b394a2/Hf2CN/Dir_lammps
['Hf', 'C', 'N']
elements: ['Hf', 'C', 'N']
counts: [132, 66, 66]
solid atom IDs: 1:264
liquid atom IDs: 265:528
Original Tm = 1000.0
New temp = 500
New temp_end = 2000
500, 2000, 1
Adaptive temp step = 500
500
Start running job (temp, id) 500 1000 ...
Using closest available scale or default: 1.0
==============================
Iteration 1
Current scale = 1.0
Pressure = -4612.298180
Converged!
Now running full trajectory...
Completed!
==============================
1000
Start running job (temp, id) 1000 1000 ...
Using closest available scale or default: 1.0
==============================
Iteration 1
Current scale = 1.0
Pressure = 17707.424400
New scale = 1.01
==============================
Iteration 2
Current scale = 1.01
Pressure = -41271.491000
Step reduced to 0.005
New scale = 1.0050000000000001
==============================
Iteration 3
Current scale = 1.0050000000000001
Pressure = -13015.723850
New scale = 1.0000000000000002
==============================
Iteration 4
Current scale = 1.0000000000000002
Pressure = 17707.118100
Step reduced to 0.0025
New scale = 1.0025000000000002
==============================
Iteration 5
Current scale = 1.0025000000000002
Pressure = 2045.671425
Converged!
Now running full trajectory...
Completed!
==============================
1500
Start running job (temp, id) 1500 1000 ...
Using closest available scale or default: 1.0025000000000002
==============================
Iteration 1
Current scale = 1.0025000000000002
Pressure = 30514.286700
New scale = 1.0125000000000002
==============================
Iteration 2
Current scale = 1.0125000000000002
Pressure = -26948.212900
Step reduced to 0.005
New scale = 1.0075000000000003
==============================
Iteration 3
Current scale = 1.0075000000000003
Pressure = 116.186847
Converged!
Now running full trajectory...
Completed!
==============================
2000
Start running job (temp, id) 2000 1000 ...
Using closest available scale or default: 1.0075000000000003
==============================
Iteration 1
Current scale = 1.0075000000000003
Pressure = 49731.157800
New scale = 1.0175000000000003
==============================
Iteration 2
Current scale = 1.0175000000000003
Pressure = -10614.883914
Step reduced to 0.005
New scale = 1.0125000000000004
==============================
Iteration 3
Current scale = 1.0125000000000004
Pressure = 9428.420141
Step reduced to 0.0025
New scale = 1.0150000000000003
==============================
Iteration 4
Current scale = 1.0150000000000003
Pressure = 8584.334110
New scale = 1.0175000000000003
==============================
Iteration 5
Current scale = 1.0175000000000003
Pressure = -11136.541539
Step reduced to 0.00125
New scale = 1.0162500000000003
Now running full trajectory...
Completed!
==============================
500, 500, 1
Adaptive temp step = 100
500
Wrote /data/qhong7/qhong7/sluschi_auto/e98ca468-543d-4ed7-95fb-2367b3b394a2/Hf2CN/Dir_lammps/summary.csv
Wrote /data/qhong7/qhong7/sluschi_auto/e98ca468-543d-4ed7-95fb-2367b3b394a2/Hf2CN/Dir_lammps/summary.out
Collected 4 folders
Wrote phase_pred.csv
Label counts:
solid = 4
liquid = 0
Wrote jobs_results.out
---------------------------------------------
Temp | Solid | Liquid | Total
---------------------------------------------
500 | 1 | 0 | 1
1000 | 1 | 0 | 1
1500 | 1 | 0 | 1
2000 | 1 | 0 | 1
---------------------------------------------
====================================
Melting Point Fit (MPFit)
====================================
Tm = 2044.93 K
Uncertainty = 6610.92 K
====================================
jobs_to_run.out Jobs completed
=== running MPFit ===
Melting temperature and std error: 2044.9288524999999 6645.6105413737387
500 1 0 1
1000 1 0 1
1500 1 0 1
2000 1 0 1
=== Find next job to run ===
next job: 1 MD duplicate(s) at 2800.0 K
2800, 2800, 1
Adaptive temp step = 100
2800
Start running job (temp, id) 2800 1000 ...
Using closest available scale or default: 1.0162500000000003
==============================
Iteration 1
Current scale = 1.0162500000000003
Pressure = 129429.446400
New scale = 1.0262500000000003
==============================
Iteration 2
Current scale = 1.0262500000000003
Pressure = 77952.713000
New scale = 1.0362500000000003
==============================
Iteration 3
Current scale = 1.0362500000000003
Pressure = 44886.245600
New scale = 1.0462500000000003
==============================
Iteration 4
Current scale = 1.0462500000000003
Pressure = -505.608198
Converged!
Now running full trajectory...
Completed!
==============================
Wrote /data/qhong7/qhong7/sluschi_auto/e98ca468-543d-4ed7-95fb-2367b3b394a2/Hf2CN/Dir_lammps/summary.csv
Wrote /data/qhong7/qhong7/sluschi_auto/e98ca468-543d-4ed7-95fb-2367b3b394a2/Hf2CN/Dir_lammps/summary.out
Collected 5 folders
Wrote phase_pred.csv
Label counts:
solid = 5
liquid = 0
Wrote jobs_results.out
---------------------------------------------
Temp | Solid | Liquid | Total
---------------------------------------------
500 | 1 | 0 | 1
1000 | 1 | 0 | 1
1500 | 1 | 0 | 1
2000 | 1 | 0 | 1
2800 | 1 | 0 | 1
---------------------------------------------
====================================
Melting Point Fit (MPFit)
====================================
Tm = 2859.99 K
Uncertainty = 9758.37 K
====================================
jobs_to_run.out Jobs completed
=== running MPFit ===
Melting temperature and std error: 2859.9890240000004 9727.7232762113745
500 1 0 1
1000 1 0 1
1500 1 0 1
2000 1 0 1
2800 1 0 1
=== Find next job to run ===
next job: 1 MD duplicate(s) at 3600.0 K
3600, 3600, 1
Adaptive temp step = 100
3600
Start running job (temp, id) 3600 1000 ...
Using closest available scale or default: 1.0462500000000003
==============================
Iteration 1
Current scale = 1.0462500000000003
Pressure = 40538.745300
New scale = 1.0562500000000004
==============================
Iteration 2
Current scale = 1.0562500000000004
Pressure = 13843.359610
New scale = 1.0662500000000004
==============================
Iteration 3
Current scale = 1.0662500000000004
Pressure = -12533.389600
Step reduced to 0.005
New scale = 1.0612500000000005
==============================
Iteration 4
Current scale = 1.0612500000000005
Pressure = -3118.378279
Converged!
Now running full trajectory...
Completed!
==============================
Wrote /data/qhong7/qhong7/sluschi_auto/e98ca468-543d-4ed7-95fb-2367b3b394a2/Hf2CN/Dir_lammps/summary.csv
Wrote /data/qhong7/qhong7/sluschi_auto/e98ca468-543d-4ed7-95fb-2367b3b394a2/Hf2CN/Dir_lammps/summary.out
Collected 6 folders
Wrote phase_pred.csv
Label counts:
solid = 6
liquid = 0
Wrote jobs_results.out
---------------------------------------------
Temp | Solid | Liquid | Total
---------------------------------------------
500 | 1 | 0 | 1
1000 | 1 | 0 | 1
1500 | 1 | 0 | 1
2000 | 1 | 0 | 1
2800 | 1 | 0 | 1
3600 | 1 | 0 | 1
---------------------------------------------
====================================
Melting Point Fit (MPFit)
====================================
Tm = 3687.32 K
Uncertainty = 12746.87 K
====================================
jobs_to_run.out Jobs completed
=== running MPFit ===
Melting temperature and std error: 3687.3237335999997 12744.787616781687
500 1 0 1
1000 1 0 1
1500 1 0 1
2000 1 0 1
2800 1 0 1
3600 1 0 1
=== Find next job to run ===
next job: 1 MD duplicate(s) at 4400.0 K
4400, 4400, 1
Adaptive temp step = 100
4400
Start running job (temp, id) 4400 1000 ...
Using closest available scale or default: 1.0612500000000005
==============================
Iteration 1
Current scale = 1.0612500000000005
Pressure = 33557.621400
New scale = 1.0712500000000005
==============================
Iteration 2
Current scale = 1.0712500000000005
Pressure = 2314.307932
Converged!
Now running full trajectory...
Completed!
==============================
Wrote /data/qhong7/qhong7/sluschi_auto/e98ca468-543d-4ed7-95fb-2367b3b394a2/Hf2CN/Dir_lammps/summary.csv
Wrote /data/qhong7/qhong7/sluschi_auto/e98ca468-543d-4ed7-95fb-2367b3b394a2/Hf2CN/Dir_lammps/summary.out
Collected 7 folders
Wrote phase_pred.csv
Label counts:
solid = 6
liquid = 1
Wrote jobs_results.out
---------------------------------------------
Temp | Solid | Liquid | Total
---------------------------------------------
500 | 1 | 0 | 1
1000 | 1 | 0 | 1
1500 | 1 | 0 | 1
2000 | 1 | 0 | 1
2800 | 1 | 0 | 1
3600 | 1 | 0 | 1
4400 | 0 | 1 | 1
---------------------------------------------
====================================
Melting Point Fit (MPFit)
====================================
Tm = 3690.31 K
Uncertainty = 17715.36 K
====================================
jobs_to_run.out Jobs completed
=== running MPFit ===
Melting temperature and std error: 3690.3093469999999 17732.454612488738
500 1 0 1
1000 1 0 1
1500 1 0 1
2000 1 0 1
2800 1 0 1
3600 1 0 1
4400 0 1 1
=== Find next job to run ===
next job: 1 MD duplicate(s) at 4000.0000000000000 K
4000, 4000, 1
Adaptive temp step = 100
4000
Start running job (temp, id) 4000 1000 ...
Using closest available scale or default: 1.0712500000000005
==============================
Iteration 1
Current scale = 1.0712500000000005
Pressure = -13573.149600
Step reduced to 0.005
New scale = 1.0662500000000006
==============================
Iteration 2
Current scale = 1.0662500000000006
Pressure = 1838.629940
Converged!
Now running full trajectory...
Completed!
==============================
Wrote /data/qhong7/qhong7/sluschi_auto/e98ca468-543d-4ed7-95fb-2367b3b394a2/Hf2CN/Dir_lammps/summary.csv
Wrote /data/qhong7/qhong7/sluschi_auto/e98ca468-543d-4ed7-95fb-2367b3b394a2/Hf2CN/Dir_lammps/summary.out
Collected 8 folders
Wrote phase_pred.csv
Label counts:
solid = 6
liquid = 2
Wrote jobs_results.out
---------------------------------------------
Temp | Solid | Liquid | Total
---------------------------------------------
500 | 1 | 0 | 1
1000 | 1 | 0 | 1
1500 | 1 | 0 | 1
2000 | 1 | 0 | 1
2800 | 1 | 0 | 1
3600 | 1 | 0 | 1
4000 | 0 | 1 | 1
4400 | 0 | 1 | 1
---------------------------------------------
====================================
Melting Point Fit (MPFit)
====================================
Tm = 3712.05 K
Uncertainty = 17777.29 K
====================================
jobs_to_run.out Jobs completed
=== running MPFit ===
Melting temperature and std error: 3712.0509952000002 17717.082569914193
500 1 0 1
1000 1 0 1
1500 1 0 1
2000 1 0 1
2800 1 0 1
3600 1 0 1
4000 0 1 1
4400 0 1 1
=== Find next job to run ===
next job: 4 MD duplicate(s) at 3600.0000000000000 K
next job: 4 MD duplicate(s) at 4000.0000000000000 K
3600, 3600, 4
Adaptive temp step = 100
3600
Start running job (temp, id) 3600 1100 ...
Using scale from current temperature folder: 1.0612500000000005
==============================
Iteration 1
Current scale = 1.0612500000000005
Pressure = -6409.078173
Step reduced to 0.005
New scale = 1.0562500000000006
==============================
Iteration 2
Current scale = 1.0562500000000006
Pressure = 6098.267149
Step reduced to 0.0025
New scale = 1.0587500000000005
==============================
Iteration 3
Current scale = 1.0587500000000005
Pressure = 5923.198873
New scale = 1.0612500000000005
==============================
Iteration 4
Current scale = 1.0612500000000005
Pressure = -2340.760030
Converged!
Now running full trajectory...
=== DFT corrections begin ===
=== PBE correction ===
N rows with PBE energy = 0
MT_LMP = 3797.814129681352
STD_LMP = 105.2741290789962
SOLID (PBE present only):
lammps_poteng_eV_per_atom = N/A
PBE_energy_eV_per_atom = N/A
N_solid_PBE = 0
SEM_lammps_solid_PBE = N/A
SEM_PBE_solid = N/A
LIQUID (PBE present only):
lammps_poteng_eV_per_atom = N/A
PBE_energy_eV_per_atom = N/A
N_liquid_PBE = 0
SEM_lammps_liquid_PBE = N/A
SEM_PBE_liquid = N/A
DH_LMP_raw_PBE = N/A
DH_LMP_PBE = N/A
DH_PBE = N/A
STD_DH_LMP_PBE = N/A
STD_DH_PBE = N/A
COV_DH_PBE_LMP = N/A
MT_PBE = N/A
STD_PBE = N/A
=== R2SCAN correction ===
N rows with R2SCAN energy = 0
MT_LMP = 3797.814129681352
STD_LMP = 105.2741290789962
SOLID (R2SCAN present only):
lammps_poteng_eV_per_atom = N/A
R2SCAN_energy_eV_per_atom = N/A
N_solid_R2SCAN = 0
SEM_lammps_solid_R2SCAN = N/A
SEM_R2SCAN_solid = N/A
LIQUID (R2SCAN present only):
lammps_poteng_eV_per_atom = N/A
R2SCAN_energy_eV_per_atom = N/A
N_liquid_R2SCAN = 0
SEM_lammps_liquid_R2SCAN = N/A
SEM_R2SCAN_liquid = N/A
DH_LMP_raw_R2SCAN = N/A
DH_LMP_R2SCAN = N/A
DH_R2SCAN = N/A
STD_DH_LMP_R2SCAN = N/A
STD_DH_R2SCAN = N/A
COV_DH_R2SCAN_LMP = N/A
MT_R2SCAN = N/A
STD_R2SCAN = N/A
=== DFT corrections end ===
Completed!
==============================
Start running job (temp, id) 3600 1200 ...
Using scale from current temperature folder: 1.0612500000000005
==============================
Iteration 1
Current scale = 1.0612500000000005
Pressure = -9679.985180
Step reduced to 0.005
New scale = 1.0562500000000006
==============================
Iteration 2
Current scale = 1.0562500000000006
Pressure = 1906.516510
Converged!
Now running full trajectory...
Completed!
==============================
Start running job (temp, id) 3600 1300 ...
Using scale from current temperature folder: 1.0562500000000006
==============================
Iteration 1
Current scale = 1.0562500000000006
Pressure = 3227.114370
Converged!
Now running full trajectory...
Completed!
==============================
4000, 4000, 4
Adaptive temp step = 100
4000
Start running job (temp, id) 4000 1100 ...
Using scale from current temperature folder: 1.0662500000000006
==============================
Iteration 1
Current scale = 1.0662500000000006
Pressure = -175.558520
Converged!
Now running full trajectory...
Completed!
==============================
Start running job (temp, id) 4000 1200 ...
Using scale from current temperature folder: 1.0662500000000006
==============================
Iteration 1
Current scale = 1.0662500000000006
Pressure = -4058.302280
Converged!
Now running full trajectory...
Completed!
==============================
Start running job (temp, id) 4000 1300 ...
Using scale from current temperature folder: 1.0662500000000006
==============================
Iteration 1
Current scale = 1.0662500000000006
Pressure = -9789.628431
Step reduced to 0.005
New scale = 1.0612500000000007
==============================
Iteration 2
Current scale = 1.0612500000000007
Pressure = 4193.461840
Converged!
Now running full trajectory...
Completed!
==============================
Wrote /data/qhong7/qhong7/sluschi_auto/e98ca468-543d-4ed7-95fb-2367b3b394a2/Hf2CN/Dir_lammps/summary.csv
Wrote /data/qhong7/qhong7/sluschi_auto/e98ca468-543d-4ed7-95fb-2367b3b394a2/Hf2CN/Dir_lammps/summary.out
Collected 14 folders
Wrote phase_pred.csv
Label counts:
solid = 9
liquid = 5
Wrote jobs_results.out
---------------------------------------------
Temp | Solid | Liquid | Total
---------------------------------------------
500 | 1 | 0 | 1
1000 | 1 | 0 | 1
1500 | 1 | 0 | 1
2000 | 1 | 0 | 1
2800 | 1 | 0 | 1
3600 | 4 | 0 | 4
4000 | 0 | 4 | 4
4400 | 0 | 1 | 1
---------------------------------------------
====================================
Melting Point Fit (MPFit)
====================================
Tm = 3797.72 K
Uncertainty = 105.37 K
====================================
jobs_to_run.out Jobs completed
=== running MPFit ===
Melting temperature and std error: 3797.5188634471560 105.77545787535068
500 1 0 1
1000 1 0 1
1500 1 0 1
2000 1 0 1
2800 1 0 1
3600 4 0 4
4000 0 4 4
4400 0 1 1
current fit
1 3797.5188634471560 105.77545787535068
possibilities:
current fit
0 3797.5188634471560 105.77545787535068
possibilities:
MP accuracy achieved. Stopping code...
summary.out
======================================================================================================================================================
folder poteng [eV/atom] kineng [eV/atom] temp [K] volume [Ang^3/atom] press [bar] energy_slope energy_dir diffusion [cm^2/s] spg
------ ---------------- ---------------- ----------- ------------------- ------------- ------------ ---------- ------------------ ------
1000/1 -10.663683 0.129810 1006.160597 12.439987 -236.923752 -0.00000028 down 3.850e-09 P1 (1)
1500/1 -10.598426 0.195820 1517.805390 12.594169 -1335.461902 -0.00000048 down 6.860e-09 P1 (1)
2000/1 -10.493208 0.258916 2006.864395 12.776073 7304.514663 -0.00000116 down 7.480e-08 P1 (1)
2800/1 -10.375597 0.364346 2824.051055 13.025717 11828.620052 -0.00004162 down 2.520e-07 P1 (1)
3600/1 -9.988968 0.469380 3638.171015 14.445999 -42222.879350 -0.00003846 down 2.830e-06 P1 (1)
3600/2 -10.062691 0.476253 3691.445850 14.131809 -32876.108050 -0.00003852 down 1.170e-06 P1 (1)
3600/3 -10.068138 0.474060 3674.444695 14.200213 -43110.177300 -0.00003534 down 1.260e-06 P1 (1)
3600/4 -9.965681 0.472021 3658.641275 14.481443 -35911.033000 -0.00002470 down 5.970e-07 P1 (1)
4000/1 -9.691503 0.511547 3965.005475 15.193770 -6507.451265 -0.00000388 down 1.770e-05 P1 (1)
4000/2 -9.787889 0.523130 4054.792860 14.960948 -16273.868490 -0.00001796 down 1.460e-05 P1 (1)
4000/3 -9.759862 0.517368 4010.125805 15.035498 -13541.639305 -0.00000649 down 7.930e-06 P1 (1)
4000/4 -9.755749 0.516571 4003.952460 15.004148 -11413.464350 -0.00000389 down 1.250e-05 P1 (1)
4400/1 -9.354069 0.562154 4357.268050 15.846549 36685.446700 0.00004104 up 4.860e-05 P1 (1)
500/1 -10.727280 0.064439 499.466985 12.283186 1687.268016 -0.00000002 down 2.290e-09 P1 (1)
======================================================================================================================================================
Wrote /data/qhong7/qhong7/sluschi_auto/e98ca468-543d-4ed7-95fb-2367b3b394a2/Hf2CN/Dir_lammps/summary.csv
Wrote /data/qhong7/qhong7/sluschi_auto/e98ca468-543d-4ed7-95fb-2367b3b394a2/Hf2CN/Dir_lammps/summary.out
Collected 14 folders
Wrote phase_pred.csv
Label counts:
solid = 9
liquid = 5
Wrote jobs_results.out
---------------------------------------------
Temp | Solid | Liquid | Total
---------------------------------------------
500 | 1 | 0 | 1
1000 | 1 | 0 | 1
1500 | 1 | 0 | 1
2000 | 1 | 0 | 1
2800 | 1 | 0 | 1
3600 | 4 | 0 | 4
4000 | 0 | 4 | 4
4400 | 0 | 1 | 1
---------------------------------------------
====================================
Melting Point Fit (MPFit)
====================================
Tm = 3797.81 K
Uncertainty = 105.27 K
====================================
Wrote /data/qhong7/qhong7/sluschi_auto/e98ca468-543d-4ed7-95fb-2367b3b394a2/Hf2CN/Dir_lammps/cost_table.out
Collected 51 log files
====================================
Computational cost summary:
Number of trajectories (temp/id) = 14
Total log files (incl. subruns) = 51
Total wall time = 2:42:53
Total seconds = 9773
Total GPU hours = 2.71
====================================
Hf2 C1 N1 1.0 5.3646169600000002 -1.6176781400000000 0.0002664100000000 5.3646169600000002 1.6176781400000000 0.0002664100000000 4.8766766700000002 0.0000000000000000 2.7593521299999999 Hf C N 2 1 1 direct 0.7486446800000000 0.7486446800000000 0.7486446800000000 Hf 0.2513553200000000 0.2513553200000000 0.2513553200000000 Hf 0.0000000000000000 0.0000000000000000 -0.0000000000000000 C 0.5000000000000000 0.5000000000000000 0.5000000000000000 N
No output files have been received yet.