From: Yoan Picchi <yoan.picchi@arm.com>
To: Yipeng Wang <yipeng1.wang@intel.com>,
Sameh Gobriel <sameh.gobriel@intel.com>,
Bruce Richardson <bruce.richardson@intel.com>,
Vladimir Medvedkin <vladimir.medvedkin@intel.com>
Cc: dev@dpdk.org, nd@arm.com, Yoan Picchi <yoan.picchi@arm.com>,
Harjot Singh <harjot.singh@arm.com>,
Nathan Brown <nathan.brown@arm.com>,
Ruifeng Wang <ruifeng.wang@arm.com>
Subject: [PATCH v9 4/4] hash: add SVE support for bulk key lookup
Date: Tue, 30 Apr 2024 16:27:43 +0000 [thread overview]
Message-ID: <20240430162743.1525484-5-yoan.picchi@arm.com> (raw)
In-Reply-To: <20240430162743.1525484-1-yoan.picchi@arm.com>
- Implemented SVE code for comparing signatures in bulk lookup.
- New SVE code is ~5% slower than optimized NEON for N2 processor for
128b vectors.
Signed-off-by: Yoan Picchi <yoan.picchi@arm.com>
Signed-off-by: Harjot Singh <harjot.singh@arm.com>
Reviewed-by: Nathan Brown <nathan.brown@arm.com>
Reviewed-by: Ruifeng Wang <ruifeng.wang@arm.com>
---
lib/hash/arch/arm/compare_signatures.h | 58 ++++++++++++++++++++++++++
lib/hash/rte_cuckoo_hash.c | 7 +++-
lib/hash/rte_cuckoo_hash.h | 1 +
3 files changed, 65 insertions(+), 1 deletion(-)
diff --git a/lib/hash/arch/arm/compare_signatures.h b/lib/hash/arch/arm/compare_signatures.h
index 72bd171484..b4b4cf04e9 100644
--- a/lib/hash/arch/arm/compare_signatures.h
+++ b/lib/hash/arch/arm/compare_signatures.h
@@ -47,6 +47,64 @@ compare_signatures_dense(uint16_t *hitmask_buffer,
*hitmask_buffer = vaddvq_u16(hit2);
}
break;
+#endif
+#if defined(RTE_HAS_SVE_ACLE)
+ case RTE_HASH_COMPARE_SVE: {
+ svuint16_t vsign, shift, sv_matches;
+ svbool_t pred, match, bucket_wide_pred;
+ int i = 0;
+ uint64_t vl = svcnth();
+
+ vsign = svdup_u16(sig);
+ shift = svindex_u16(0, 1);
+
+ if (vl >= 2 * RTE_HASH_BUCKET_ENTRIES && RTE_HASH_BUCKET_ENTRIES <= 8) {
+ svuint16_t primary_array_vect, secondary_array_vect;
+ bucket_wide_pred = svwhilelt_b16(0, RTE_HASH_BUCKET_ENTRIES);
+ primary_array_vect = svld1_u16(bucket_wide_pred, prim_bucket_sigs);
+ secondary_array_vect = svld1_u16(bucket_wide_pred, sec_bucket_sigs);
+
+ /* We merged the two vectors so we can do both comparisons at once */
+ primary_array_vect = svsplice_u16(bucket_wide_pred,
+ primary_array_vect,
+ secondary_array_vect);
+ pred = svwhilelt_b16(0, 2*RTE_HASH_BUCKET_ENTRIES);
+
+ /* Compare all signatures in the buckets */
+ match = svcmpeq_u16(pred, vsign, primary_array_vect);
+ if (svptest_any(svptrue_b16(), match)) {
+ sv_matches = svdup_u16(1);
+ sv_matches = svlsl_u16_z(match, sv_matches, shift);
+ *hitmask_buffer = svorv_u16(svptrue_b16(), sv_matches);
+ }
+ } else {
+ do {
+ pred = svwhilelt_b16(i, RTE_HASH_BUCKET_ENTRIES);
+ uint16_t lower_half = 0;
+ uint16_t upper_half = 0;
+ /* Compare all signatures in the primary bucket */
+ match = svcmpeq_u16(pred, vsign, svld1_u16(pred,
+ &prim_bucket_sigs[i]));
+ if (svptest_any(svptrue_b16(), match)) {
+ sv_matches = svdup_u16(1);
+ sv_matches = svlsl_u16_z(match, sv_matches, shift);
+ lower_half = svorv_u16(svptrue_b16(), sv_matches);
+ }
+ /* Compare all signatures in the secondary bucket */
+ match = svcmpeq_u16(pred, vsign, svld1_u16(pred,
+ &sec_bucket_sigs[i]));
+ if (svptest_any(svptrue_b16(), match)) {
+ sv_matches = svdup_u16(1);
+ sv_matches = svlsl_u16_z(match, sv_matches, shift);
+ upper_half = svorv_u16(svptrue_b16(), sv_matches)
+ << RTE_HASH_BUCKET_ENTRIES;
+ }
+ hitmask_buffer[i / 8] = upper_half | lower_half;
+ i += vl;
+ } while (i < RTE_HASH_BUCKET_ENTRIES);
+ }
+ }
+ break;
#endif
default:
for (unsigned int i = 0; i < RTE_HASH_BUCKET_ENTRIES; i++) {
diff --git a/lib/hash/rte_cuckoo_hash.c b/lib/hash/rte_cuckoo_hash.c
index 0697743cdf..75f555ba2c 100644
--- a/lib/hash/rte_cuckoo_hash.c
+++ b/lib/hash/rte_cuckoo_hash.c
@@ -450,8 +450,13 @@ rte_hash_create(const struct rte_hash_parameters *params)
h->sig_cmp_fn = RTE_HASH_COMPARE_SSE;
else
#elif defined(RTE_ARCH_ARM64)
- if (rte_cpu_get_flag_enabled(RTE_CPUFLAG_NEON))
+ if (rte_cpu_get_flag_enabled(RTE_CPUFLAG_NEON)) {
h->sig_cmp_fn = RTE_HASH_COMPARE_NEON;
+#if defined(RTE_HAS_SVE_ACLE)
+ if (rte_cpu_get_flag_enabled(RTE_CPUFLAG_SVE))
+ h->sig_cmp_fn = RTE_HASH_COMPARE_SVE;
+#endif
+ }
else
#endif
h->sig_cmp_fn = RTE_HASH_COMPARE_SCALAR;
diff --git a/lib/hash/rte_cuckoo_hash.h b/lib/hash/rte_cuckoo_hash.h
index a528f1d1a0..01ad01c258 100644
--- a/lib/hash/rte_cuckoo_hash.h
+++ b/lib/hash/rte_cuckoo_hash.h
@@ -139,6 +139,7 @@ enum rte_hash_sig_compare_function {
RTE_HASH_COMPARE_SCALAR = 0,
RTE_HASH_COMPARE_SSE,
RTE_HASH_COMPARE_NEON,
+ RTE_HASH_COMPARE_SVE,
RTE_HASH_COMPARE_NUM
};
--
2.25.1
next prev parent reply other threads:[~2024-04-30 16:28 UTC|newest]
Thread overview: 73+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-10-20 16:51 [PATCH v2 0/4] " Yoan Picchi
2023-10-20 16:51 ` [PATCH v2 1/4] hash: pack the hitmask for hash in bulk lookup Yoan Picchi
2023-10-20 16:51 ` [PATCH v2 2/4] hash: optimize compare signature for NEON Yoan Picchi
2023-10-20 16:51 ` [PATCH v2 3/4] test/hash: check bulk lookup of keys after collision Yoan Picchi
2023-10-20 16:51 ` [PATCH v2 4/4] hash: add SVE support for bulk key lookup Yoan Picchi
2024-02-27 17:41 ` [PATCH v5 0/4] " Yoan Picchi
2024-02-27 17:42 ` [PATCH v5 1/4] hash: pack the hitmask for hash in bulk lookup Yoan Picchi
2024-02-27 17:42 ` [PATCH v5 2/4] hash: optimize compare signature for NEON Yoan Picchi
2024-02-27 17:42 ` [PATCH v5 3/4] test/hash: check bulk lookup of keys after collision Yoan Picchi
2024-02-27 17:42 ` [PATCH v5 4/4] hash: add SVE support for bulk key lookup Yoan Picchi
2024-02-28 10:56 ` Konstantin Ananyev
2024-02-28 14:48 ` Yoan Picchi
2024-03-04 13:35 ` Konstantin Ananyev
2024-03-05 15:36 ` Yoan Picchi
2024-03-11 23:21 ` [PATCH v6 0/4] " Yoan Picchi
2024-03-11 23:21 ` [PATCH v6 1/4] hash: pack the hitmask for hash in bulk lookup Yoan Picchi
2024-03-11 23:21 ` [PATCH v6 2/4] hash: optimize compare signature for NEON Yoan Picchi
2024-03-11 23:21 ` [PATCH v6 3/4] test/hash: check bulk lookup of keys after collision Yoan Picchi
2024-03-11 23:21 ` [PATCH v6 4/4] hash: add SVE support for bulk key lookup Yoan Picchi
2024-03-12 3:57 ` fengchengwen
2024-03-12 15:08 ` Yoan Picchi
2024-03-12 15:42 ` [PATCH v7 0/4] " Yoan Picchi
2024-03-12 15:42 ` [PATCH v7 1/4] hash: pack the hitmask for hash in bulk lookup Yoan Picchi
2024-03-19 10:41 ` Konstantin Ananyev
2024-03-19 13:09 ` Yoan Picchi
2024-03-19 13:25 ` Konstantin Ananyev
2024-03-19 16:09 ` Stephen Hemminger
2024-03-12 15:42 ` [PATCH v7 2/4] hash: optimize compare signature for NEON Yoan Picchi
2024-03-20 7:37 ` [EXTERNAL] " Pavan Nikhilesh Bhagavatula
2024-04-11 13:32 ` Yoan Picchi
2024-03-12 15:42 ` [PATCH v7 3/4] test/hash: check bulk lookup of keys after collision Yoan Picchi
2024-03-12 15:42 ` [PATCH v7 4/4] hash: add SVE support for bulk key lookup Yoan Picchi
2024-04-17 16:08 ` [PATCH v8 0/4] " Yoan Picchi
2024-04-17 16:08 ` [PATCH v8 1/4] hash: pack the hitmask for hash in bulk lookup Yoan Picchi
2024-04-17 18:12 ` Stephen Hemminger
2024-04-17 16:08 ` [PATCH v8 2/4] hash: optimize compare signature for NEON Yoan Picchi
2024-04-17 16:08 ` [PATCH v8 3/4] test/hash: check bulk lookup of keys after collision Yoan Picchi
2024-04-17 16:08 ` [PATCH v8 4/4] hash: add SVE support for bulk key lookup Yoan Picchi
2024-04-30 16:27 ` [PATCH v9 0/4] " Yoan Picchi
2024-04-30 16:27 ` [PATCH v9 1/4] hash: pack the hitmask for hash in bulk lookup Yoan Picchi
2024-06-14 13:42 ` David Marchand
2024-04-30 16:27 ` [PATCH v9 2/4] hash: optimize compare signature for NEON Yoan Picchi
2024-04-30 16:27 ` [PATCH v9 3/4] test/hash: check bulk lookup of keys after collision Yoan Picchi
2024-04-30 16:27 ` Yoan Picchi [this message]
2024-06-14 13:42 ` [PATCH v9 4/4] hash: add SVE support for bulk key lookup David Marchand
2024-06-14 13:43 ` [PATCH v9 0/4] " David Marchand
2024-06-18 15:55 ` Konstantin Ananyev
2024-06-27 14:48 ` Thomas Monjalon
2024-07-03 17:13 ` [PATCH v10 " Yoan Picchi
2024-07-03 17:13 ` [PATCH v10 1/4] hash: pack the hitmask for hash in bulk lookup Yoan Picchi
2024-07-04 20:31 ` David Marchand
2024-07-05 17:43 ` Yoan Picchi
2024-07-07 12:08 ` Thomas Monjalon
2024-07-03 17:13 ` [PATCH v10 2/4] hash: optimize compare signature for NEON Yoan Picchi
2024-07-03 17:13 ` [PATCH v10 3/4] test/hash: check bulk lookup of keys after collision Yoan Picchi
2024-07-03 17:13 ` [PATCH v10 4/4] hash: add SVE support for bulk key lookup Yoan Picchi
2024-07-05 17:45 ` [PATCH v11 0/7] " Yoan Picchi
2024-07-05 17:45 ` [PATCH v11 1/7] hash: make compare signature function enum private Yoan Picchi
2024-07-05 17:45 ` [PATCH v11 2/7] hash: split compare signature into arch-specific files Yoan Picchi
2024-07-05 17:45 ` [PATCH v11 3/7] hash: add a check on hash entry max size Yoan Picchi
2024-07-05 17:45 ` [PATCH v11 4/7] hash: pack the hitmask for hash in bulk lookup Yoan Picchi
2024-07-05 17:45 ` [PATCH v11 5/7] hash: optimize compare signature for NEON Yoan Picchi
2024-07-05 17:45 ` [PATCH v11 6/7] test/hash: check bulk lookup of keys after collision Yoan Picchi
2024-07-05 17:45 ` [PATCH v11 7/7] hash: add SVE support for bulk key lookup Yoan Picchi
2024-07-08 12:14 ` [PATCH v12 0/7] " Yoan Picchi
2024-07-08 12:14 ` [PATCH v12 1/7] hash: make compare signature function enum private Yoan Picchi
2024-07-08 12:14 ` [PATCH v12 2/7] hash: split compare signature into arch-specific files Yoan Picchi
2024-07-08 12:14 ` [PATCH v12 3/7] hash: add a check on hash entry max size Yoan Picchi
2024-07-08 12:14 ` [PATCH v12 4/7] hash: pack the hitmask for hash in bulk lookup Yoan Picchi
2024-07-08 12:14 ` [PATCH v12 5/7] hash: optimize compare signature for NEON Yoan Picchi
2024-07-08 12:14 ` [PATCH v12 6/7] test/hash: check bulk lookup of keys after collision Yoan Picchi
2024-07-08 12:14 ` [PATCH v12 7/7] hash: add SVE support for bulk key lookup Yoan Picchi
2024-07-09 4:48 ` [PATCH v12 0/7] " David Marchand
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