Add Pippenger cache and limit Straus cache size

src/ringct/bulletproofs.cc

@@ -49,6 +49,9 @@ extern "C"
 
 #define PERF_TIMER_START_BP(x) PERF_TIMER_START_UNIT(x, 1000000)
 
+#define STRAUS_SIZE_LIMIT 128
+#define PIPPENGER_SIZE_LIMIT 0
+
 namespace rct
 {
 
@@ -61,8 +64,8 @@ static constexpr size_t maxN = 64;
 static constexpr size_t maxM = BULLETPROOF_MAX_OUTPUTS;
 static rct::key Hi[maxN*maxM], Gi[maxN*maxM];
 static ge_p3 Hi_p3[maxN*maxM], Gi_p3[maxN*maxM];
-static ge_dsmp Gprecomp[maxN*maxM], Hprecomp[maxN*maxM];
-static std::shared_ptr<straus_cached_data> HiGi_cache;
+static std::shared_ptr<straus_cached_data> straus_HiGi_cache;
+static std::shared_ptr<pippenger_cached_data> pippenger_HiGi_cache;
 static const rct::key TWO = { {0x02, 0x00, 0x00,0x00 , 0x00, 0x00, 0x00,0x00 , 0x00, 0x00, 0x00,0x00 , 0x00, 0x00, 0x00,0x00 , 0x00, 0x00, 0x00,0x00 , 0x00, 0x00, 0x00,0x00 , 0x00, 0x00, 0x00,0x00 , 0x00, 0x00, 0x00,0x00  } };
 static const rct::keyV oneN = vector_dup(rct::identity(), maxN);
 static const rct::keyV twoN = vector_powers(TWO, maxN);
@@ -73,9 +76,12 @@ static inline rct::key multiexp(const std::vector<MultiexpData> &data, bool HiGi
 {
   static const size_t STEP = getenv("STRAUS_STEP") ? atoi(getenv("STRAUS_STEP")) : 0;
   if (HiGi)
-    return data.size() <= 256 ? straus(data, HiGi_cache, STEP) : pippenger(data, get_pippenger_c(data.size()));
+  {
+    static_assert(128 <= STRAUS_SIZE_LIMIT, "Straus in precalc mode can only be calculated till STRAUS_SIZE_LIMIT");
+    return data.size() <= 128 ? straus(data, straus_HiGi_cache, STEP) : pippenger(data, pippenger_HiGi_cache, get_pippenger_c(data.size()));
+  }
   else
-    return data.size() <= 64 ? straus(data, NULL, STEP) : pippenger(data, get_pippenger_c(data.size()));
+    return data.size() <= 64 ? straus(data, NULL, STEP) : pippenger(data, NULL, get_pippenger_c(data.size()));
 }
 
 //addKeys3acc_p3
@@ -123,18 +129,23 @@ static void init_exponents()
   for (size_t i = 0; i < maxN*maxM; ++i)
   {
     Hi[i] = get_exponent(rct::H, i * 2);
-    rct::precomp(Hprecomp[i], Hi[i]);
     CHECK_AND_ASSERT_THROW_MES(ge_frombytes_vartime(&Hi_p3[i], Hi[i].bytes) == 0, "ge_frombytes_vartime failed");
     Gi[i] = get_exponent(rct::H, i * 2 + 1);
-    rct::precomp(Gprecomp[i], Gi[i]);
     CHECK_AND_ASSERT_THROW_MES(ge_frombytes_vartime(&Gi_p3[i], Gi[i].bytes) == 0, "ge_frombytes_vartime failed");
 
     data.push_back({rct::zero(), Gi[i]});
     data.push_back({rct::zero(), Hi[i]});
   }
-  HiGi_cache = straus_init_cache(data);
-  size_t cache_size = (sizeof(Hi)+sizeof(Hprecomp)+sizeof(Hi_p3))*2 + straus_get_cache_size(HiGi_cache);
-  MINFO("cache size: " << cache_size/1024 << " kB");
+
+  straus_HiGi_cache = straus_init_cache(data, STRAUS_SIZE_LIMIT);
+  pippenger_HiGi_cache = pippenger_init_cache(data, PIPPENGER_SIZE_LIMIT);
+
+  MINFO("Hi/Gi cache size: " << (sizeof(Hi)+sizeof(Gi))/1024 << " kB");
+  MINFO("Hi_p3/Gi_p3 cache size: " << (sizeof(Hi_p3)+sizeof(Gi_p3))/1024 << " kB");
+  MINFO("Straus cache size: " << straus_get_cache_size(straus_HiGi_cache)/1024 << " kB");
+  MINFO("Pippenger cache size: " << pippenger_get_cache_size(pippenger_HiGi_cache)/1024 << " kB");
+  size_t cache_size = (sizeof(Hi)+sizeof(Hi_p3))*2 + straus_get_cache_size(straus_HiGi_cache) + pippenger_get_cache_size(pippenger_HiGi_cache);
+  MINFO("Total cache size: " << cache_size/1024 << "kB");
   init_done = true;
 }
 

src/ringct/multiexp.cc

@@ -343,9 +343,12 @@ struct straus_cached_data
 #endif
 #endif
 
-std::shared_ptr<straus_cached_data> straus_init_cache(const std::vector<MultiexpData> &data)
+std::shared_ptr<straus_cached_data> straus_init_cache(const std::vector<MultiexpData> &data, size_t N)
 {
   MULTIEXP_PERF(PERF_TIMER_START_UNIT(multiples, 1000000));
+  if (N == 0)
+    N = data.size();
+  CHECK_AND_ASSERT_THROW_MES(N <= data.size(), "Bad cache base data");
   ge_cached cached;
   ge_p1p1 p1;
   ge_p3 p3;
@@ -353,9 +356,10 @@ std::shared_ptr<straus_cached_data> straus_init_cache(const std::vector<Multiexp
 
 #ifdef RAW_MEMORY_BLOCK
   const size_t offset = cache->size;
-  cache->multiples = (ge_cached*)aligned_realloc(cache->multiples, sizeof(ge_cached) * ((1<<STRAUS_C)-1) * std::max(offset, data.size()), 4096);
-  cache->size = data.size();
-  for (size_t j=offset;j<data.size();++j)
+  cache->multiples = (ge_cached*)aligned_realloc(cache->multiples, sizeof(ge_cached) * ((1<<STRAUS_C)-1) * std::max(offset, N), 4096);
+  CHECK_AND_ASSERT_THROW_MES(cache->multiples, "Out of memory");
+  cache->size = N;
+  for (size_t j=offset;j<N;++j)
   {
     ge_p3_to_cached(&CACHE_OFFSET(cache, j, 1), &data[j].point);
     for (size_t i=2;i<1<<STRAUS_C;++i)
@@ -368,8 +372,8 @@ std::shared_ptr<straus_cached_data> straus_init_cache(const std::vector<Multiexp
 #else
 #ifdef ALTERNATE_LAYOUT
   const size_t offset = cache->multiples.size();
-  cache->multiples.resize(std::max(offset, data.size()));
-  for (size_t i = offset; i < data.size(); ++i)
+  cache->multiples.resize(std::max(offset, N));
+  for (size_t i = offset; i < N; ++i)
   {
     cache->multiples[i].resize((1<<STRAUS_C)-1);
     ge_p3_to_cached(&cache->multiples[i][0], &data[i].point);
@@ -383,12 +387,12 @@ std::shared_ptr<straus_cached_data> straus_init_cache(const std::vector<Multiexp
 #else
   cache->multiples.resize(1<<STRAUS_C);
   size_t offset = cache->multiples[1].size();
-  cache->multiples[1].resize(std::max(offset, data.size()));
-  for (size_t i = offset; i < data.size(); ++i)
+  cache->multiples[1].resize(std::max(offset, N));
+  for (size_t i = offset; i < N; ++i)
     ge_p3_to_cached(&cache->multiples[1][i], &data[i].point);
   for (size_t i=2;i<1<<STRAUS_C;++i)
-    cache->multiples[i].resize(std::max(offset, data.size()));
-  for (size_t j=offset;j<data.size();++j)
+    cache->multiples[i].resize(std::max(offset, N));
+  for (size_t j=offset;j<N;++j)
   {
     for (size_t i=2;i<1<<STRAUS_C;++i)
     {
@@ -418,6 +422,7 @@ size_t straus_get_cache_size(const std::shared_ptr<straus_cached_data> &cache)
 
 rct::key straus(const std::vector<MultiexpData> &data, const std::shared_ptr<straus_cached_data> &cache, size_t STEP)
 {
+  CHECK_AND_ASSERT_THROW_MES(cache == NULL || cache->size >= data.size(), "Cache is too small");
   MULTIEXP_PERF(PERF_TIMER_UNIT(straus, 1000000));
   bool HiGi = cache != NULL;
   STEP = STEP ? STEP : 192;
@@ -533,7 +538,8 @@ skipfirst:
 
 size_t get_pippenger_c(size_t N)
 {
-// 2:1, 4:2, 8:2, 16:3, 32:4, 64:4, 128:5, 256:6, 512:7, 1024:7, 2048:8, 4096:9
+// uncached: 2:1, 4:2, 8:2, 16:3, 32:4, 64:4, 128:5, 256:6, 512:7, 1024:7, 2048:8, 4096:9
+//   cached: 2:1, 4:2, 8:2, 16:3, 32:4, 64:4, 128:5, 256:6, 512:7, 1024:7, 2048:8, 4096:9
   if (N <= 2) return 1;
   if (N <= 8) return 2;
   if (N <= 16) return 3;
@@ -545,23 +551,55 @@ size_t get_pippenger_c(size_t N)
   return 9;
 }
 
-rct::key pippenger(const std::vector<MultiexpData> &data, size_t c)
+struct pippenger_cached_data
 {
+  size_t size;
+  ge_cached *cached;
+  pippenger_cached_data(): size(0), cached(NULL) {}
+  ~pippenger_cached_data() { aligned_free(cached); }
+};
+
+std::shared_ptr<pippenger_cached_data> pippenger_init_cache(const std::vector<MultiexpData> &data, size_t N)
+{
+  MULTIEXP_PERF(PERF_TIMER_START_UNIT(pippenger_init_cache, 1000000));
+  if (N == 0)
+    N = data.size();
+  CHECK_AND_ASSERT_THROW_MES(N <= data.size(), "Bad cache base data");
+  ge_cached cached;
+  std::shared_ptr<pippenger_cached_data> cache(new pippenger_cached_data());
+
+  cache->size = N;
+  cache->cached = (ge_cached*)aligned_realloc(cache->cached, N * sizeof(ge_cached), 4096);
+  CHECK_AND_ASSERT_THROW_MES(cache->cached, "Out of memory");
+  for (size_t i = 0; i < N; ++i)
+    ge_p3_to_cached(&cache->cached[i], &data[i].point);
+
+  MULTIEXP_PERF(PERF_TIMER_STOP(pippenger_init_cache));
+  return cache;
+}
+
+size_t pippenger_get_cache_size(const std::shared_ptr<pippenger_cached_data> &cache)
+{
+  return cache->size * sizeof(*cache->cached);
+}
+
+rct::key pippenger(const std::vector<MultiexpData> &data, const std::shared_ptr<pippenger_cached_data> &cache, size_t c)
+{
+  CHECK_AND_ASSERT_THROW_MES(cache == NULL || cache->size >= data.size(), "Cache is too small");
+  if (c == 0)
+    c = get_pippenger_c(data.size());
   CHECK_AND_ASSERT_THROW_MES(c <= 9, "c is too large");
 
   ge_p3 result = ge_p3_identity;
   std::unique_ptr<ge_p3[]> buckets{new ge_p3[1<<c]};
-  std::unique_ptr<ge_cached[]> cached_points{new ge_cached[data.size()]};
-
-  for (size_t i = 0; i < data.size(); ++i)
-  {
-    ge_p3_to_cached(&cached_points[i], &data[i].point);
-  }
+  std::shared_ptr<pippenger_cached_data> local_cache = cache == NULL ? pippenger_init_cache(data) : cache;
 
   rct::key maxscalar = rct::zero();
   for (size_t i = 0; i < data.size(); ++i)
+  {
     if (maxscalar < data[i].scalar)
       maxscalar = data[i].scalar;
+  }
   size_t groups = 0;
   while (groups < 256 && pow2(groups) < maxscalar)
     ++groups;
@@ -598,7 +636,7 @@ rct::key pippenger(const std::vector<MultiexpData> &data, size_t c)
       CHECK_AND_ASSERT_THROW_MES(bucket < (1u<<c), "bucket overflow");
       if (memcmp(&buckets[bucket], &ge_p3_identity, sizeof(ge_p3)))
       {
-        add(buckets[bucket], cached_points[i]);
+        add(buckets[bucket], local_cache->cached[i]);
       }
       else
         buckets[bucket] = data[i].point;

src/ringct/multiexp.h

@@ -54,14 +54,17 @@ struct MultiexpData {
 };
 
 struct straus_cached_data;
+struct pippenger_cached_data;
 
 rct::key bos_coster_heap_conv(std::vector<MultiexpData> data);
 rct::key bos_coster_heap_conv_robust(std::vector<MultiexpData> data);
-std::shared_ptr<straus_cached_data> straus_init_cache(const std::vector<MultiexpData> &data);
+std::shared_ptr<straus_cached_data> straus_init_cache(const std::vector<MultiexpData> &data, size_t N =0);
 size_t straus_get_cache_size(const std::shared_ptr<straus_cached_data> &cache);
 rct::key straus(const std::vector<MultiexpData> &data, const std::shared_ptr<straus_cached_data> &cache = NULL, size_t STEP = 0);
+std::shared_ptr<pippenger_cached_data> pippenger_init_cache(const std::vector<MultiexpData> &data, size_t N =0);
+size_t pippenger_get_cache_size(const std::shared_ptr<pippenger_cached_data> &cache);
 size_t get_pippenger_c(size_t N);
-rct::key pippenger(const std::vector<MultiexpData> &data, size_t c);
+rct::key pippenger(const std::vector<MultiexpData> &data, const std::shared_ptr<pippenger_cached_data> &cache = NULL, size_t c = 0);
 
 }
 

tests/performance_tests/main.cpp

@@ -281,16 +281,137 @@ int main(int argc, char** argv)
   TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger, 2, 1);
   TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger, 4, 2);
   TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger, 8, 2);
-  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger, 16, 4);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger, 16, 3);
   TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger, 32, 4);
-  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger, 64, 5);
-  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger, 128, 6);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger, 64, 4);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger, 128, 5);
   TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger, 256, 6);
-  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger, 512, 6);
-  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger, 1024, 8);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger, 512, 7);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger, 1024, 7);
   TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger, 2048, 8);
   TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger, 4096, 9);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 2, 1);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 4, 2);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 8, 2);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 16, 3);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 32, 4);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 64, 4);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 128, 5);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 256, 6);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 512, 7);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 1024, 7);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 2048, 8);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 4096, 9);
 #else
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 2, 1);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 2, 2);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 2, 3);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 2, 4);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 2, 5);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 2, 6);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 2, 7);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 2, 8);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 2, 9);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 4, 1);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 4, 2);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 4, 3);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 4, 4);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 4, 5);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 4, 6);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 4, 7);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 4, 8);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 4, 9);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 8, 1);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 8, 2);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 8, 3);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 8, 4);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 8, 5);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 8, 6);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 8, 7);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 8, 8);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 8, 9);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 16, 1);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 16, 2);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 16, 3);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 16, 4);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 16, 5);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 16, 6);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 16, 7);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 16, 8);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 16, 9);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 32, 1);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 32, 2);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 32, 3);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 32, 4);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 32, 5);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 32, 6);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 32, 7);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 32, 8);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 32, 9);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 64, 1);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 64, 2);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 64, 3);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 64, 4);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 64, 5);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 64, 6);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 64, 7);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 64, 8);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 64, 9);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 128, 1);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 128, 2);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 128, 3);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 128, 4);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 128, 5);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 128, 6);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 128, 7);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 128, 8);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 128, 9);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 256, 1);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 256, 2);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 256, 3);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 256, 4);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 256, 5);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 256, 6);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 256, 7);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 256, 8);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 256, 9);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 512, 1);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 512, 2);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 512, 3);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 512, 4);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 512, 5);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 512, 6);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 512, 7);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 512, 8);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 512, 9);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 1024, 1);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 1024, 2);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 1024, 3);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 1024, 4);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 1024, 5);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 1024, 6);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 1024, 7);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 1024, 8);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 1024, 9);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 2048, 1);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 2048, 2);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 2048, 3);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 2048, 4);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 2048, 5);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 2048, 6);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 2048, 7);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 2048, 8);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 2048, 9);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 4096, 1);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 4096, 2);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 4096, 3);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 4096, 4);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 4096, 5);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 4096, 6);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 4096, 7);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 4096, 8);
+  TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger_cached, 4096, 9);
+
   TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger, 2, 1);
   TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger, 2, 2);
   TEST_PERFORMANCE3(filter, p, test_multiexp, multiexp_pippenger, 2, 3);

tests/performance_tests/multiexp.h

@@ -40,6 +40,7 @@ enum test_multiexp_algorithm
   multiexp_straus,
   multiexp_straus_cached,
   multiexp_pippenger,
+  multiexp_pippenger_cached,
 };
 
 template<test_multiexp_algorithm algorithm, size_t npoints, size_t c=0>
@@ -61,7 +62,8 @@ public:
       rct::key kn = rct::scalarmultKey(point, data[n].scalar);
       res = rct::addKeys(res, kn);
     }
-    cache = rct::straus_init_cache(data);
+    straus_cache = rct::straus_init_cache(data);
+    pippenger_cache = rct::pippenger_init_cache(data);
     return true;
   }
 
@@ -74,9 +76,11 @@ public:
       case multiexp_straus:
         return res == straus(data);
       case multiexp_straus_cached:
-        return res == straus(data, cache);
+        return res == straus(data, straus_cache);
       case multiexp_pippenger:
-        return res == pippenger(data, c);
+        return res == pippenger(data, NULL, c);
+      case multiexp_pippenger_cached:
+        return res == pippenger(data, pippenger_cache, c);
       default:
         return false;
     }
@@ -84,6 +88,7 @@ public:
 
 private:
   std::vector<rct::MultiexpData> data;
-  std::shared_ptr<rct::straus_cached_data> cache;
+  std::shared_ptr<rct::straus_cached_data> straus_cache;
+  std::shared_ptr<rct::pippenger_cached_data> pippenger_cache;
   rct::key res;
 };