meminfo - HPC Tuning Recommendations

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MemTotal:       787714068 kB
MemFree:        775510044 kB
MemAvailable:   782017276 kB
Buffers:          250420 kB
Cached:          9524320 kB
SwapCached:            0 kB
Active:          2095024 kB
Inactive:        8496332 kB
Active(anon):     863284 kB
Inactive(anon):        0 kB
Active(file):    1231740 kB
Inactive(file):  8496332 kB
Unevictable:        3088 kB
Mlocked:               0 kB
SwapTotal:       8388604 kB
SwapFree:        8388604 kB
Zswap:                 0 kB
Zswapped:              0 kB
Dirty:             89048 kB
Writeback:            64 kB
AnonPages:        819744 kB
Mapped:           364980 kB
Shmem:             46648 kB
KReclaimable:     382120 kB
Slab:             875284 kB
SReclaimable:     382120 kB
SUnreclaim:       493164 kB
KernelStack:       23984 kB
PageTables:        22904 kB
SecPageTables:      7028 kB
NFS_Unstable:          0 kB
Bounce:                0 kB
WritebackTmp:          0 kB
CommitLimit:    402245636 kB
Committed_AS:    7113080 kB
VmallocTotal:   13743895347199 kB
VmallocUsed:      468880 kB
VmallocChunk:          0 kB
Percpu:           115456 kB
HardwareCorrupted:     0 kB
AnonHugePages:         0 kB
ShmemHugePages:        0 kB
ShmemPmdMapped:        0 kB
FileHugePages:         0 kB
FilePmdMapped:         0 kB
Unaccepted:            0 kB
HugePages_Total:       0
HugePages_Free:        0
HugePages_Rsvd:        0
HugePages_Surp:        0
Hugepagesize:       2048 kB
Hugetlb:               0 kB
DirectMap4k:      271032 kB
DirectMap2M:     7702528 kB
DirectMap1G:    797966336 kB