Implementation notes: amd64, alder, crypto_hash/simd256

Computer: alder
Microarchitecture: amd64; Golden Cove (90675-00)
Architecture: amd64
CPU ID: GenuineIntel-00090675-00-bfebfbff
SUPERCOP version: 20240716
Operation: crypto_hash
Primitive: simd256
TimeObject sizeTest sizeImplementationCompilerBenchmark dateSUPERCOP version
2869159592 0 072408 780 952T:sphlibgcc_-march=native_-mtune=native_-O3_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall2024071620240716
3646949555 0 060120 780 952T:sphlibgcc_-march=native_-mtune=native_-O_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall2024071620240716
3694048329 0 060824 812 920T:sphlibclang_-march=native_-O3_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall2024071620240716
3695255379 0 068096 812 888T:sphlibclang_-mcpu=native_-O3_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall2024071620240716
3774450859 0 061326 804 888T:sphlibclang_-march=native_-O_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall2024071620240716
3794044974 0 057304 812 920T:sphlibclang_-march=native_-O2_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall2024071620240716
3830946585 0 056091 756 920T:sphlibgcc_-march=native_-mtune=native_-Os_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall2024071620240716
3831533416 0 046256 780 952T:sphlib-smallgcc_-march=native_-mtune=native_-O3_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall2024071620240716
4032744172 0 054238 804 888T:sphlibclang_-march=native_-Os_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall2024071620240716
4067149971 0 060816 780 952T:sphlibgcc_-march=native_-mtune=native_-O2_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall2024071620240716
4719226983 0 037486 804 888T:sphlib-smallclang_-march=native_-O_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall2024071620240716
4728634839 0 047592 812 888T:sphlib-smallclang_-mcpu=native_-O3_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall2024071620240716
4779727775 0 038360 780 952T:sphlib-smallgcc_-march=native_-mtune=native_-O_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall2024071620240716
4814025566 0 035099 756 920T:sphlib-smallgcc_-march=native_-mtune=native_-Os_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall2024071620240716
4886127770 0 040176 812 920T:sphlib-smallclang_-march=native_-O2_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall2024071620240716
4946528251 0 039120 780 952T:sphlib-smallgcc_-march=native_-mtune=native_-O2_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall2024071620240716
4974448659 416 061667 1228 952T:optgcc_-march=native_-mtune=native_-O3_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall2024071620240716
5037131098 0 043664 812 920T:sphlib-smallclang_-march=native_-O3_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall2024071620240716
5135123799 0 033974 804 888T:sphlib-smallclang_-march=native_-Os_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall2024071620240716
5915331987 388 044183 1232 888T:optclang_-mcpu=native_-O3_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall2024071620240716
5946532745 388 044087 1232 920T:optclang_-march=native_-O3_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall2024071620240716
6035927143 388 039215 1232 920T:optclang_-march=native_-O2_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall2024071620240716
6673614306 416 025339 1228 952T:optgcc_-march=native_-mtune=native_-O2_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall2024071620240716
6856615676 388 026293 1224 888T:optclang_-march=native_-O_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall2024071620240716
6898317714 388 027853 1224 888T:optclang_-march=native_-Os_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall2024071620240716
6923812845 416 022518 1204 920T:optgcc_-march=native_-mtune=native_-Os_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall2024071620240716
7372514798 416 025531 1228 952T:optgcc_-march=native_-mtune=native_-O_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall2024071620240716
277937012201 388 024887 1232 920T:refclang_-march=native_-O2_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall2024071620240716
279313314073 388 026935 1232 920T:refclang_-march=native_-O3_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall2024071620240716
28063865398 388 015597 1224 888T:refclang_-march=native_-Os_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall2024071620240716
28562505170 388 015741 1224 888T:refclang_-march=native_-O_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall2024071620240716
28592415459 416 016427 1228 952T:refgcc_-march=native_-mtune=native_-O2_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall2024071620240716
286354912834 416 025851 1228 952T:refgcc_-march=native_-mtune=native_-O3_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall2024071620240716
30098725199 416 015867 1228 952T:refgcc_-march=native_-mtune=native_-O_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall2024071620240716
315886616081 388 028967 1232 888T:refclang_-mcpu=native_-O3_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall2024071620240716
49650494526 416 014126 1204 920T:refgcc_-march=native_-mtune=native_-Os_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall2024071620240716

Checksum failure


97ecbf92588d446b3b5894d7cf8ba5cae01b1c22273b8ea1408e0ccb47fcdb96

Number of similar (implementation,compiler) pairs: 4, namely:
ImplementationCompiler
T:vect128gcc -march=native -mtune=native -O2 -fwrapv -fPIC -fPIE -gdwarf-4 -Wall (10.2.1_20210110)
T:vect128gcc -march=native -mtune=native -O3 -fwrapv -fPIC -fPIE -gdwarf-4 -Wall (10.2.1_20210110)
T:vect128gcc -march=native -mtune=native -O -fwrapv -fPIC -fPIE -gdwarf-4 -Wall (10.2.1_20210110)
T:vect128gcc -march=native -mtune=native -Os -fwrapv -fPIC -fPIE -gdwarf-4 -Wall (10.2.1_20210110)

Compiler output


optimized.c: optimized.c:437:9: warning: unused variable 'j' [-Wunused-variable]
optimized.c:   int i,j;
optimized.c:         ^
optimized.c: 1 warning generated.

Number of similar (implementation,compiler) pairs: 5, namely:
ImplementationCompiler
T:optclang -march=native -O2 -fwrapv -Qunused-arguments -fPIC -fPIE -gdwarf-4 -Wall (Debian_Clang_11.0.1)
T:optclang -march=native -O3 -fwrapv -Qunused-arguments -fPIC -fPIE -gdwarf-4 -Wall (Debian_Clang_11.0.1)
T:optclang -march=native -O -fwrapv -Qunused-arguments -fPIC -fPIE -gdwarf-4 -Wall (Debian_Clang_11.0.1)
T:optclang -march=native -Os -fwrapv -Qunused-arguments -fPIC -fPIE -gdwarf-4 -Wall (Debian_Clang_11.0.1)
T:optclang -mcpu=native -O3 -fwrapv -Qunused-arguments -fPIC -fPIE -gdwarf-4 -Wall (Debian_Clang_11.0.1)

Compiler output


optimized.c: optimized.c: In function 'SIMD_Compress':
optimized.c: optimized.c:437:9: warning: unused variable 'j' [-Wunused-variable]
optimized.c:   437 |   int i,j;
optimized.c:       |         ^

Number of similar (implementation,compiler) pairs: 4, namely:
ImplementationCompiler
T:optgcc -march=native -mtune=native -O2 -fwrapv -fPIC -fPIE -gdwarf-4 -Wall (10.2.1_20210110)
T:optgcc -march=native -mtune=native -O3 -fwrapv -fPIC -fPIE -gdwarf-4 -Wall (10.2.1_20210110)
T:optgcc -march=native -mtune=native -O -fwrapv -fPIC -fPIE -gdwarf-4 -Wall (10.2.1_20210110)
T:optgcc -march=native -mtune=native -Os -fwrapv -fPIC -fPIE -gdwarf-4 -Wall (10.2.1_20210110)

Compiler output


reference.c: reference.c:69:82: warning: expression result unused [-Wunused-value]
reference.c:     state->A[j] = state->D[j] + w[j] + F(state->A[j], state->B[j], state->C[j]), s;
reference.c:                                                                                  ^
reference.c: 1 warning generated.

Number of similar (implementation,compiler) pairs: 5, namely:
ImplementationCompiler
T:refclang -march=native -O2 -fwrapv -Qunused-arguments -fPIC -fPIE -gdwarf-4 -Wall (Debian_Clang_11.0.1)
T:refclang -march=native -O3 -fwrapv -Qunused-arguments -fPIC -fPIE -gdwarf-4 -Wall (Debian_Clang_11.0.1)
T:refclang -march=native -O -fwrapv -Qunused-arguments -fPIC -fPIE -gdwarf-4 -Wall (Debian_Clang_11.0.1)
T:refclang -march=native -Os -fwrapv -Qunused-arguments -fPIC -fPIE -gdwarf-4 -Wall (Debian_Clang_11.0.1)
T:refclang -mcpu=native -O3 -fwrapv -Qunused-arguments -fPIC -fPIE -gdwarf-4 -Wall (Debian_Clang_11.0.1)

Compiler output


reference.c: reference.c: In function 'Step':
reference.c: reference.c:69:80: warning: right-hand operand of comma expression has no effect [-Wunused-value]
reference.c:    69 |     state->A[j] = state->D[j] + w[j] + F(state->A[j], state->B[j], state->C[j]), s;
reference.c:       |                                                                                ^

Number of similar (implementation,compiler) pairs: 4, namely:
ImplementationCompiler
T:refgcc -march=native -mtune=native -O2 -fwrapv -fPIC -fPIE -gdwarf-4 -Wall (10.2.1_20210110)
T:refgcc -march=native -mtune=native -O3 -fwrapv -fPIC -fPIE -gdwarf-4 -Wall (10.2.1_20210110)
T:refgcc -march=native -mtune=native -O -fwrapv -fPIC -fPIE -gdwarf-4 -Wall (10.2.1_20210110)
T:refgcc -march=native -mtune=native -Os -fwrapv -fPIC -fPIE -gdwarf-4 -Wall (10.2.1_20210110)

Compiler output


vector.c: vector.c:73:9: warning: 'X' macro redefined [-Wmacro-redefined]
vector.c: #define X(i) X##i
vector.c:         ^
vector.c: vector.c:68:9: note: previous definition is here
vector.c: #define X(i) A[i]
vector.c:         ^
vector.c: vector.c:129:3: error: use of unknown builtin '__builtin_ia32_pcmpgtw128' [-Wimplicit-function-declaration]
vector.c:   DO_REDUCE_FULL_S(0);
vector.c:   ^
vector.c: vector.c:56:12: note: expanded from macro 'DO_REDUCE_FULL_S'
vector.c:     X(i) = EXTRA_REDUCE_S(X(i));                \
vector.c:            ^
vector.c: vector.c:42:32: note: expanded from macro 'EXTRA_REDUCE_S'
vector.c:   v16_sub(x, v16_and(V257.v16, v16_cmp(x, V128.v16)))
vector.c:                                ^
vector.c: ./vector.h:92:22: note: expanded from macro 'v16_cmp'
vector.c: #define v16_cmp      __builtin_ia32_pcmpgtw128
vector.c:                      ^
vector.c: vector.c:129:3: error: cannot convert between scalar type 'int' and vector type 'v16' (aka 'v8hi') as implicit conversion would cause truncation
vector.c: vector.c:56:12: note: expanded from macro 'DO_REDUCE_FULL_S'
vector.c:     X(i) = EXTRA_REDUCE_S(X(i));                \
vector.c:            ^
vector.c: vector.c:42:14: note: expanded from macro 'EXTRA_REDUCE_S'
vector.c:   v16_sub(x, v16_and(V257.v16, v16_cmp(x, V128.v16)))
vector.c:              ^
vector.c: ...

Number of similar (implementation,compiler) pairs: 5, namely:
ImplementationCompiler
T:vect128clang -march=native -O2 -fwrapv -Qunused-arguments -fPIC -fPIE -gdwarf-4 -Wall (Debian_Clang_11.0.1)
T:vect128clang -march=native -O3 -fwrapv -Qunused-arguments -fPIC -fPIE -gdwarf-4 -Wall (Debian_Clang_11.0.1)
T:vect128clang -march=native -O -fwrapv -Qunused-arguments -fPIC -fPIE -gdwarf-4 -Wall (Debian_Clang_11.0.1)
T:vect128clang -march=native -Os -fwrapv -Qunused-arguments -fPIC -fPIE -gdwarf-4 -Wall (Debian_Clang_11.0.1)
T:vect128clang -mcpu=native -O3 -fwrapv -Qunused-arguments -fPIC -fPIE -gdwarf-4 -Wall (Debian_Clang_11.0.1)

Compiler output


vector.c: vector.c: In function 'fft64':
vector.c: vector.c:73: warning: "X" redefined
vector.c:    73 | #define X(i) X##i
vector.c:       |
vector.c: vector.c:68: note: this is the location of the previous definition
vector.c:    68 | #define X(i) A[i]
vector.c:       |
vector.c: vector.c: In function 'fft128_msg_final':
vector.c: vector.c:326:7: warning: unused variable 'i' [-Wunused-variable]
vector.c:   326 |   int i;
vector.c:       |       ^
vector.c: vector.c: In function 'rounds512':
vector.c: vector.c:796: warning: "STEP_1" redefined
vector.c:   796 | #define STEP_1(a,b,c,d,w,fun,r,s,z)             \
vector.c:       |
vector.c: vector.c:542: note: this is the location of the previous definition
vector.c:   542 | #define STEP_1(a,b,c,d,w,fun,r,s,z)                             \
vector.c:       |
vector.c: vector.c:805: warning: "STEP_2" redefined
vector.c:   805 | #define STEP_2(a,b,c,d,w,fun,r,s)              \
vector.c:       |
vector.c: vector.c:566: note: this is the location of the previous definition
vector.c:   566 | #define STEP_2(a,b,c,d,w,fun,r,s)                               \
vector.c:       |
vector.c: vector.c:808: warning: "STEP" redefined
vector.c: ...

Number of similar (implementation,compiler) pairs: 4, namely:
ImplementationCompiler
T:vect128gcc -march=native -mtune=native -O2 -fwrapv -fPIC -fPIE -gdwarf-4 -Wall (10.2.1_20210110)
T:vect128gcc -march=native -mtune=native -O3 -fwrapv -fPIC -fPIE -gdwarf-4 -Wall (10.2.1_20210110)
T:vect128gcc -march=native -mtune=native -O -fwrapv -fPIC -fPIE -gdwarf-4 -Wall (10.2.1_20210110)
T:vect128gcc -march=native -mtune=native -Os -fwrapv -fPIC -fPIE -gdwarf-4 -Wall (10.2.1_20210110)

Namespace violations


nist.o Final T
nist.o Hash T
nist.o IV_224 D
nist.o IV_256 D
nist.o IV_384 D
nist.o IV_512 D
nist.o IncreaseCounter T
nist.o Init T
nist.o InitIV T
nist.o Update T
optimized.o FFT_128_full T
optimized.o FFT_128_halfzero T
optimized.o FFT_256_halfzero T
optimized.o FFT_64 T
optimized.o RequiredAlignment T
optimized.o Round4 T
optimized.o Round8 T
optimized.o SIMD_Compress T
optimized.o SupportedLength T
optimized.o VERSION T
optimized.o fft128_natural T
optimized.o fft256_natural T
optimized.o p8_xor R
optimized.o revbin T

Number of similar (implementation,compiler) pairs: 9, namely:
ImplementationCompiler
T:optclang -march=native -O2 -fwrapv -Qunused-arguments -fPIC -fPIE -gdwarf-4 -Wall (Debian_Clang_11.0.1)
T:optclang -march=native -O3 -fwrapv -Qunused-arguments -fPIC -fPIE -gdwarf-4 -Wall (Debian_Clang_11.0.1)
T:optclang -march=native -O -fwrapv -Qunused-arguments -fPIC -fPIE -gdwarf-4 -Wall (Debian_Clang_11.0.1)
T:optclang -march=native -Os -fwrapv -Qunused-arguments -fPIC -fPIE -gdwarf-4 -Wall (Debian_Clang_11.0.1)
T:optclang -mcpu=native -O3 -fwrapv -Qunused-arguments -fPIC -fPIE -gdwarf-4 -Wall (Debian_Clang_11.0.1)
T:optgcc -march=native -mtune=native -O2 -fwrapv -fPIC -fPIE -gdwarf-4 -Wall (10.2.1_20210110)
T:optgcc -march=native -mtune=native -O3 -fwrapv -fPIC -fPIE -gdwarf-4 -Wall (10.2.1_20210110)
T:optgcc -march=native -mtune=native -O -fwrapv -fPIC -fPIE -gdwarf-4 -Wall (10.2.1_20210110)
T:optgcc -march=native -mtune=native -Os -fwrapv -fPIC -fPIE -gdwarf-4 -Wall (10.2.1_20210110)

Namespace violations


nist.o Final T
nist.o Hash T
nist.o IV_224 D
nist.o IV_256 D
nist.o IV_384 D
nist.o IV_512 D
nist.o IncreaseCounter T
nist.o Init T
nist.o InitIV T
nist.o Update T
reference.o IF T
reference.o MAJ T
reference.o P R
reference.o RequiredAlignment T
reference.o Round T
reference.o SIMD_Compress T
reference.o Step T
reference.o SupportedLength T
reference.o VERSION T
reference.o message_expansion T
reference.o p4 R
reference.o p8 R

Number of similar (implementation,compiler) pairs: 9, namely:
ImplementationCompiler
T:refclang -march=native -O2 -fwrapv -Qunused-arguments -fPIC -fPIE -gdwarf-4 -Wall (Debian_Clang_11.0.1)
T:refclang -march=native -O3 -fwrapv -Qunused-arguments -fPIC -fPIE -gdwarf-4 -Wall (Debian_Clang_11.0.1)
T:refclang -march=native -O -fwrapv -Qunused-arguments -fPIC -fPIE -gdwarf-4 -Wall (Debian_Clang_11.0.1)
T:refclang -march=native -Os -fwrapv -Qunused-arguments -fPIC -fPIE -gdwarf-4 -Wall (Debian_Clang_11.0.1)
T:refclang -mcpu=native -O3 -fwrapv -Qunused-arguments -fPIC -fPIE -gdwarf-4 -Wall (Debian_Clang_11.0.1)
T:refgcc -march=native -mtune=native -O2 -fwrapv -fPIC -fPIE -gdwarf-4 -Wall (10.2.1_20210110)
T:refgcc -march=native -mtune=native -O3 -fwrapv -fPIC -fPIE -gdwarf-4 -Wall (10.2.1_20210110)
T:refgcc -march=native -mtune=native -O -fwrapv -fPIC -fPIE -gdwarf-4 -Wall (10.2.1_20210110)
T:refgcc -march=native -mtune=native -Os -fwrapv -fPIC -fPIE -gdwarf-4 -Wall (10.2.1_20210110)

Namespace violations


simd.o sph_simd224 T
simd.o sph_simd224_addbits_and_close T
simd.o sph_simd224_close T
simd.o sph_simd224_init T
simd.o sph_simd256 T
simd.o sph_simd256_addbits_and_close T
simd.o sph_simd256_close T
simd.o sph_simd256_init T
simd.o sph_simd384 T
simd.o sph_simd384_addbits_and_close T
simd.o sph_simd384_close T
simd.o sph_simd384_init T
simd.o sph_simd512 T
simd.o sph_simd512_addbits_and_close T
simd.o sph_simd512_close T
simd.o sph_simd512_init T

Number of similar (implementation,compiler) pairs: 18, namely:
ImplementationCompiler
T:sphlibclang -march=native -O2 -fwrapv -Qunused-arguments -fPIC -fPIE -gdwarf-4 -Wall (Debian_Clang_11.0.1)
T:sphlibclang -march=native -O3 -fwrapv -Qunused-arguments -fPIC -fPIE -gdwarf-4 -Wall (Debian_Clang_11.0.1)
T:sphlibclang -march=native -O -fwrapv -Qunused-arguments -fPIC -fPIE -gdwarf-4 -Wall (Debian_Clang_11.0.1)
T:sphlibclang -march=native -Os -fwrapv -Qunused-arguments -fPIC -fPIE -gdwarf-4 -Wall (Debian_Clang_11.0.1)
T:sphlibclang -mcpu=native -O3 -fwrapv -Qunused-arguments -fPIC -fPIE -gdwarf-4 -Wall (Debian_Clang_11.0.1)
T:sphlibgcc -march=native -mtune=native -O2 -fwrapv -fPIC -fPIE -gdwarf-4 -Wall (10.2.1_20210110)
T:sphlibgcc -march=native -mtune=native -O3 -fwrapv -fPIC -fPIE -gdwarf-4 -Wall (10.2.1_20210110)
T:sphlibgcc -march=native -mtune=native -O -fwrapv -fPIC -fPIE -gdwarf-4 -Wall (10.2.1_20210110)
T:sphlibgcc -march=native -mtune=native -Os -fwrapv -fPIC -fPIE -gdwarf-4 -Wall (10.2.1_20210110)
T:sphlib-smallclang -march=native -O2 -fwrapv -Qunused-arguments -fPIC -fPIE -gdwarf-4 -Wall (Debian_Clang_11.0.1)
T:sphlib-smallclang -march=native -O3 -fwrapv -Qunused-arguments -fPIC -fPIE -gdwarf-4 -Wall (Debian_Clang_11.0.1)
T:sphlib-smallclang -march=native -O -fwrapv -Qunused-arguments -fPIC -fPIE -gdwarf-4 -Wall (Debian_Clang_11.0.1)
T:sphlib-smallclang -march=native -Os -fwrapv -Qunused-arguments -fPIC -fPIE -gdwarf-4 -Wall (Debian_Clang_11.0.1)
T:sphlib-smallclang -mcpu=native -O3 -fwrapv -Qunused-arguments -fPIC -fPIE -gdwarf-4 -Wall (Debian_Clang_11.0.1)
T:sphlib-smallgcc -march=native -mtune=native -O2 -fwrapv -fPIC -fPIE -gdwarf-4 -Wall (10.2.1_20210110)
T:sphlib-smallgcc -march=native -mtune=native -O3 -fwrapv -fPIC -fPIE -gdwarf-4 -Wall (10.2.1_20210110)
T:sphlib-smallgcc -march=native -mtune=native -O -fwrapv -fPIC -fPIE -gdwarf-4 -Wall (10.2.1_20210110)
T:sphlib-smallgcc -march=native -mtune=native -Os -fwrapv -fPIC -fPIE -gdwarf-4 -Wall (10.2.1_20210110)