I also have the exact problem with this warning since couple of months.
Attached you find an example (LiF) with a quick run; please change the number of q-points in ph.in and elph.in accordingly.
Here the output when I use ypp_ph :
Code: Select all
<01s> P0001: [01] CPU structure, Files & I/O Directories
<01s> P0001: CPU-Threads:32(CPU)-1(threads)-1(threads@X)-1(threads@DIP)-1(threads@SE)-1(threads@RT)-1(threads@K)
<01s> P0001: [02] Y(ambo) P(ost)/(re) P(rocessor)
<01s> P0001: [03] Core DB
<01s> P0001: :: Electrons : 8.000000
<01s> P0001: :: Temperature [ev]: 0.000000
<01s> P0001: :: Lattice factors [a.u.]: 7.188329 7.188329 7.188329
<01s> P0001: :: K points : 59
<01s> P0001: :: Bands : 100
<01s> P0001: :: Symmetries : 16
<01s> P0001: :: RL vectors : 35557
<01s> P0001: [04] K-point grid
<01s> P0001: :: Q-points (IBZ): 59
<01s> P0001: :: X K-points (IBZ): 59
<01s> P0001: [05] CORE Variables Setup
<01s> P0001: [05.01] Unit cells
<01s> P0001: [05.02] Symmetries
<01s> P0001: [05.03] RL shells
<01s> P0001: [05.04] K-grid lattice
<01s> P0001: [05.05] Energies [ev] & Occupations
<02s> P0001: [06] == Electron-Phonon Interface: PW->Yambo Databases ==
<02s> P0001: PW(ELPH) databases ...
<02s> P0001: [M 0.233 Gb] Alloc GKKP ( 0.229)
<02s> P0001: [M 0.348 Gb] Alloc GKKP_DW ( 0.114)
<02s> P0001: ELPH databases (WRITE) | | [000%] --(E) --(X)
<04s> P0001: [WARNING]K-grid is not fully q-connected @ Q1
<16s> P0001: [WARNING]K-grid is not fully q-connected @ Q2
<27s> P0001: ELPH databases (WRITE) |# | [003%] 25s(E) 12m-34s(X)
<28s> P0001: [WARNING]K-grid is not fully q-connected @ Q3
<39s> P0001: ELPH databases (WRITE) |## | [005%] 37s(E) 12m-15s(X)
<40s> P0001: [WARNING]K-grid is not fully q-connected @ Q4
<51s> P0001: [WARNING]K-grid is not fully q-connected @ Q5
<59s> P0001: ELPH databases (WRITE) |### | [008%] 57s(E) 11m-20s(X)
<01m-00s> P0001: [WARNING]K-grid is not fully q-connected @ Q6
<01m-08s> P0001: ELPH databases (WRITE) |#### | [010%] 01m-06s(E) 10m-55s(X)
<01m-09s> P0001: [WARNING]K-grid is not fully q-connected @ Q7
<01m-18s> P0001: [WARNING]K-grid is not fully q-connected @ Q8
<01m-27s> P0001: ELPH databases (WRITE) |##### | [013%] 01m-25s(E) 10m-28s(X)
<01m-28s> P0001: [WARNING]K-grid is not fully q-connected @ Q9
<01m-36s> P0001: ELPH databases (WRITE) |###### | [015%] 01m-34s(E) 10m-20s(X)
<01m-37s> P0001: [WARNING]K-grid is not fully q-connected @ Q10
<01m-47s> P0001: [WARNING]K-grid is not fully q-connected @ Q11
<01m-55s> P0001: ELPH databases (WRITE) |####### | [018%] 01m-53s(E) 10m-08s(X)
<01m-56s> P0001: [WARNING]K-grid is not fully q-connected @ Q12
<02m-05s> P0001: ELPH databases (WRITE) |######## | [020%] 02m-02s(E) 10m-04s(X)
<02m-05s> P0001: [WARNING]K-grid is not fully q-connected @ Q13
<02m-15s> P0001: [WARNING]K-grid is not fully q-connected @ Q14
<02m-23s> P0001: ELPH databases (WRITE) |######### | [023%] 02m-21s(E) 09m-56s(X)
<02m-24s> P0001: [WARNING]K-grid is not fully q-connected @ Q15
<02m-32s> P0001: ELPH databases (WRITE) |########## | [025%] 02m-30s(E) 09m-53s(X)
<02m-33s> P0001: [WARNING]K-grid is not fully q-connected @ Q16
<02m-42s> P0001: [WARNING]K-grid is not fully q-connected @ Q17
<02m-51s> P0001: ELPH databases (WRITE) |########### | [028%] 02m-49s(E) 09m-47s(X)
<02m-51s> P0001: [WARNING]K-grid is not fully q-connected @ Q18
<03m-00s> P0001: ELPH databases (WRITE) |############ | [030%] 02m-58s(E) 09m-45s(X)
<03m-01s> P0001: [WARNING]K-grid is not fully q-connected @ Q19
<03m-10s> P0001: [WARNING]K-grid is not fully q-connected @ Q20
<03m-19s> P0001: ELPH databases (WRITE) |############# | [033%] 03m-17s(E) 09m-41s(X)
<03m-19s> P0001: [WARNING]K-grid is not fully q-connected @ Q21
<03m-28s> P0001: ELPH databases (WRITE) |############## | [035%] 03m-26s(E) 09m-39s(X)
<03m-29s> P0001: [WARNING]K-grid is not fully q-connected @ Q22
<03m-38s> P0001: [WARNING]K-grid is not fully q-connected @ Q23
<03m-47s> P0001: ELPH databases (WRITE) |############### | [038%] 03m-44s(E) 09m-37s(X)
<03m-47s> P0001: [WARNING]K-grid is not fully q-connected @ Q24
<03m-56s> P0001: ELPH databases (WRITE) |################ | [040%] 03m-54s(E) 09m-35s(X)
<03m-57s> P0001: [WARNING]K-grid is not fully q-connected @ Q25
<04m-06s> P0001: [WARNING]K-grid is not fully q-connected @ Q26
<04m-14s> P0001: ELPH databases (WRITE) |################# | [044%] 04m-12s(E) 09m-33s(X)
<04m-15s> P0001: [WARNING]K-grid is not fully q-connected @ Q27
<04m-24s> P0001: ELPH databases (WRITE) |################## | [045%] 04m-22s(E) 09m-32s(X)
<04m-24s> P0001: [WARNING]K-grid is not fully q-connected @ Q28
<04m-34s> P0001: [WARNING]K-grid is not fully q-connected @ Q29
<04m-42s> P0001: ELPH databases (WRITE) |################### | [049%] 04m-40s(E) 09m-30s(X)
<04m-43s> P0001: [WARNING]K-grid is not fully q-connected @ Q30
<04m-51s> P0001: ELPH databases (WRITE) |#################### | [050%] 04m-49s(E) 09m-29s(X)
<04m-52s> P0001: [WARNING]K-grid is not fully q-connected @ Q31
<05m-00s> P0001: ELPH databases (WRITE) |##################### | [052%] 04m-58s(E) 09m-28s(X)
<05m-01s> P0001: [WARNING]K-grid is not fully q-connected @ Q32
<05m-10s> P0001: [WARNING]K-grid is not fully q-connected @ Q33
<05m-19s> P0001: ELPH databases (WRITE) |###################### | [055%] 05m-17s(E) 09m-27s(X)
<05m-20s> P0001: [WARNING]K-grid is not fully q-connected @ Q34
<05m-28s> P0001: ELPH databases (WRITE) |####################### | [057%] 05m-26s(E) 09m-26s(X)
<05m-29s> P0001: [WARNING]K-grid is not fully q-connected @ Q35
<05m-38s> P0001: [WARNING]K-grid is not fully q-connected @ Q36
<05m-47s> P0001: ELPH databases (WRITE) |######################## | [061%] 05m-45s(E) 09m-26s(X)
<05m-48s> P0001: [WARNING]K-grid is not fully q-connected @ Q37
<05m-57s> P0001: ELPH databases (WRITE) |######################### | [062%] 05m-55s(E) 09m-26s(X)
<05m-57s> P0001: [WARNING]K-grid is not fully q-connected @ Q38
<06m-07s> P0001: [WARNING]K-grid is not fully q-connected @ Q39
<06m-16s> P0001: ELPH databases (WRITE) |########################## | [066%] 06m-14s(E) 09m-26s(X)
<06m-17s> P0001: [WARNING]K-grid is not fully q-connected @ Q40
<06m-26s> P0001: ELPH databases (WRITE) |########################### | [067%] 06m-24s(E) 09m-26s(X)
<06m-27s> P0001: [WARNING]K-grid is not fully q-connected @ Q41
<06m-36s> P0001: [WARNING]K-grid is not fully q-connected @ Q42
<06m-45s> P0001: ELPH databases (WRITE) |############################ | [071%] 06m-43s(E) 09m-26s(X)
<06m-46s> P0001: [WARNING]K-grid is not fully q-connected @ Q43
<06m-55s> P0001: ELPH databases (WRITE) |############################# | [072%] 06m-52s(E) 09m-26s(X)
<06m-55s> P0001: [WARNING]K-grid is not fully q-connected @ Q44
<07m-04s> P0001: [WARNING]K-grid is not fully q-connected @ Q45
<07m-13s> P0001: ELPH databases (WRITE) |############################## | [076%] 07m-11s(E) 09m-25s(X)
<07m-14s> P0001: [WARNING]K-grid is not fully q-connected @ Q46
<07m-22s> P0001: ELPH databases (WRITE) |############################### | [077%] 07m-20s(E) 09m-24s(X)
<07m-23s> P0001: [WARNING]K-grid is not fully q-connected @ Q47
<07m-32s> P0001: [WARNING]K-grid is not fully q-connected @ Q48
<07m-41s> P0001: ELPH databases (WRITE) |################################ | [081%] 07m-39s(E) 09m-24s(X)
<07m-41s> P0001: [WARNING]K-grid is not fully q-connected @ Q49
<07m-50s> P0001: ELPH databases (WRITE) |################################# | [083%] 07m-48s(E) 09m-23s(X)
<07m-51s> P0001: [WARNING]K-grid is not fully q-connected @ Q50
<08m-00s> P0001: [WARNING]K-grid is not fully q-connected @ Q51
<08m-09s> P0001: ELPH databases (WRITE) |################################## | [086%] 08m-06s(E) 09m-23s(X)
<08m-09s> P0001: [WARNING]K-grid is not fully q-connected @ Q52
<08m-18s> P0001: ELPH databases (WRITE) |################################### | [088%] 08m-16s(E) 09m-23s(X)
<08m-19s> P0001: [WARNING]K-grid is not fully q-connected @ Q53
<08m-28s> P0001: [WARNING]K-grid is not fully q-connected @ Q54
<08m-36s> P0001: ELPH databases (WRITE) |#################################### | [091%] 08m-34s(E) 09m-22s(X)
<08m-37s> P0001: [WARNING]K-grid is not fully q-connected @ Q55
<08m-46s> P0001: ELPH databases (WRITE) |##################################### | [093%] 08m-44s(E) 09m-22s(X)
<08m-46s> P0001: [WARNING]K-grid is not fully q-connected @ Q56
<08m-56s> P0001: [WARNING]K-grid is not fully q-connected @ Q57
<09m-04s> P0001: ELPH databases (WRITE) |###################################### | [096%] 09m-02s(E) 09m-21s(X)
<09m-05s> P0001: [WARNING]K-grid is not fully q-connected @ Q58
<09m-14s> P0001: ELPH databases (WRITE) |####################################### | [098%] 09m-12s(E) 09m-21s(X)
<09m-14s> P0001: [WARNING]K-grid is not fully q-connected @ Q59
<09m-23s> P0001: ELPH databases (WRITE) |########################################| [100%] 09m-21s(E) 09m-21s(X)
<09m-23s> P0001: :: Modes : 6
<09m-23s> P0001: :: Bands range : 100
<09m-23s> P0001: [07] Game Over
Best wishes,
Martin