  We present results on the world's first over 100 PFLOPS single precision
lattice QCD quark solver on the japanese new supercomputer Fugaku. We achieve a
factor 38 time speedup from the supercomputer K on the same problem size,
$192^4$, with 102 PFLOPS, 10% floating-point operation efficiency against
single precision floating-point operation peak. The evaluation region is the
single precision BiCGStab for a Clover-Wilson Dirac matrix with Schwarz
Alternating Procedure domain decomposition preconditioning using Jacobi
iteration for the local domain matrix inversion.
