{"id":336280,"date":"2022-07-28T09:00:44","date_gmt":"2022-07-28T09:00:44","guid":{"rendered":"http:\/\/savepearlharbor.com\/?p=336280"},"modified":"-0001-11-30T00:00:00","modified_gmt":"-0001-11-29T21:00:00","slug":"","status":"publish","type":"post","link":"https:\/\/savepearlharbor.com\/?p=336280","title":{"rendered":"<span>Vector API \u0432 Java: \u043a\u0440\u0430\u0442\u043a\u0438\u0439 \u043e\u0431\u0437\u043e\u0440 \u0438 \u0442\u0435\u0441\u0442\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u0435<\/span>"},"content":{"rendered":"<div><\/div>\n<div id=\"post-content-body\">\n<div>\n<div class=\"article-formatted-body article-formatted-body article-formatted-body_version-1\">\n<div xmlns=\"http:\/\/www.w3.org\/1999\/xhtml\">\n<p>\u041d\u0435\u043a\u043e\u0442\u043e\u0440\u043e\u0435 \u0432\u0440\u0435\u043c\u044f \u043d\u0430\u0437\u0430\u0434 \u043f\u043e\u043f\u0430\u043b\u0430\u0441\u044c \u043d\u0430 \u0433\u043b\u0430\u0437\u0430 \u0441\u0442\u0430\u0442\u044c\u044f \u043f\u0440\u043e Vector API \u0432 Java.<\/p>\n<p>  <\/p>\n<p>\u041f\u0440\u043e\u0447\u0438\u0442\u0430\u043b, \u0437\u0430\u0438\u043d\u0442\u0435\u0440\u0435\u0441\u043e\u0432\u0430\u043b\u0441\u044f. \u041d\u0430\u043a\u043e\u043d\u0435\u0446, \u043d\u0435\u0434\u0430\u0432\u043d\u043e \u0434\u043e\u0448\u043b\u0438 \u0440\u0443\u043a\u0438 \u043f\u043e\u0441\u043c\u043e\u0442\u0440\u0435\u0442\u044c, \u0447\u0442\u043e \u0436\u0435 \u044d\u0442\u043e \u0442\u0430\u043a\u043e\u0435 \u0438 \u043a\u0430\u043a \u0440\u0430\u0431\u043e\u0442\u0430\u0435\u0442. <\/p>\n<p>  <\/p>\n<p>\u0420\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442\u044b \u043d\u0435\u043c\u043d\u043e\u0433\u043e \u043d\u0435\u043e\u0434\u043d\u043e\u0437\u043d\u0430\u0447\u043d\u044b\u0435.<\/p>\n<p><a name=\"habracut\"><\/a>  <\/p>\n<h5 id=\"kratkoe-opisanie\">\u041a\u0440\u0430\u0442\u043a\u043e\u0435 \u043e\u043f\u0438\u0441\u0430\u043d\u0438\u0435<\/h5>\n<p>  <\/p>\n<p>\u0418\u0442\u0430\u043a, Vector API \u0432 Java \u0441\u0435\u0439\u0447\u0430\u0441 \u2014 \u044d\u0442\u043e \u043c\u043e\u0434\u0443\u043b\u044c, \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u043f\u0440\u0435\u0434\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u044c \u0432\u044b\u043f\u043e\u043b\u043d\u044f\u0442\u044c \u0432\u0435\u043a\u0442\u043e\u0440\u043d\u044b\u0435 \u0432\u044b\u0447\u0438\u0441\u043b\u0435\u043d\u0438\u044f, \u0443\u0441\u043a\u043e\u0440\u044f\u0435\u043c\u044b\u0435 \u0430\u043f\u043f\u0430\u0440\u0430\u0442\u043d\u043e. \u042f\u0432\u043b\u044f\u0435\u0442\u0441\u044f \u0447\u0430\u0441\u0442\u044c\u044e <a href=\"https:\/\/openjdk.org\/projects\/panama\/\" rel=\"nofollow noopener noreferrer\">Project Panama<\/a>. <\/p>\n<p>  <\/p>\n<p>\u0412 \u0434\u0430\u043d\u043d\u044b\u0439 \u043c\u043e\u043c\u0435\u043d\u0442 (Java 18) \u043c\u043e\u0434\u0443\u043b\u044c \u043d\u0430\u0445\u043e\u0434\u0438\u0442\u0441\u044f \u0432 \u0441\u0442\u0430\u0434\u0438\u0438 \u0442\u0440\u0435\u0442\u044c\u0435\u0433\u043e \u0438\u043d\u043a\u0443\u0431\u0430\u0442\u043e\u0440\u0430. <\/p>\n<p>  <\/p>\n<p>\u041a\u043b\u044e\u0447\u0435\u0432\u0430\u044f \u043e\u0441\u043e\u0431\u0435\u043d\u043d\u043e\u0441\u0442\u044c \u2014 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435 SIMD (single instruction, multiple data) \u2014 \u0442.\u0435. \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u0435 \u043c\u0430\u0442\u0435\u043c\u0430\u0442\u0438\u0447\u0435\u0441\u043a\u043e\u0439 \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u0438 \u043d\u0430\u0434 \u043d\u0435\u0441\u043a\u043e\u043b\u044c\u043a\u0438\u043c\u0438 \u0441\u043a\u0430\u043b\u044f\u0440\u043d\u044b\u043c\u0438 \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u044f\u043c\u0438 ( == \u0432\u0435\u043a\u0442\u043e\u0440\u043e\u043c ) \u043e\u0434\u043d\u043e\u0432\u0440\u0435\u043c\u0435\u043d\u043d\u043e, \u0447\u0442\u043e \u0432 \u0442\u0435\u043e\u0440\u0438\u0438 \u043c\u043e\u0436\u0435\u0442 \u0434\u0430\u0442\u044c \u0443\u0441\u043a\u043e\u0440\u0435\u043d\u0438\u0435 \u0432\u044b\u0447\u0438\u0441\u043b\u0435\u043d\u0438\u0439. <\/p>\n<p>  <\/p>\n<p><img decoding=\"async\" src=\"https:\/\/habrastorage.org\/r\/w1560\/webt\/bi\/tc\/uy\/bitcuy1oaab_r2daga8pbtlfdse.png\" alt=\"\u0418\u0437\u0432\u0435\u0441\u0442\u043d\u0430\u044f \u0432\u0441\u0435\u043c \u043a\u0430\u0440\u0442\u0438\u043d\u043a\u0430 \u043f\u0440\u043e SIMD\" data-src=\"https:\/\/habrastorage.org\/webt\/bi\/tc\/uy\/bitcuy1oaab_r2daga8pbtlfdse.png\"\/><\/p>\n<p>  <\/p>\n<p>\u0412\u043e\u0442 \u043a\u0430\u043a \u044d\u0442\u043e \u0432\u044b\u0433\u043b\u044f\u0434\u0438\u0442 \u0432 \u0431\u0430\u0437\u043e\u0432\u043e\u043c \u0441\u043b\u0443\u0447\u0430\u0435:<\/p>\n<p>  <\/p>\n<pre><code class=\"java\">float[] a = new float[] {0.1F, 0.2F, 0.3F, 0.4F}; float[] b = new float[] {0.5F, 0.6F, 0.7F, 0.8F};  FloatVector va = FloatVector.fromArray(FloatVector.SPECIES_128, a, 0); FloatVector vb = FloatVector.fromArray(FloatVector.SPECIES_128, b, 0);  FloatVector result = va.add(vb).div(4F).pow(2F).neg();<\/code><\/pre>\n<p>  <\/p>\n<p>\u0424\u043e\u0440\u043c\u0438\u0440\u0443\u0435\u043c \u0432\u0435\u043a\u0442\u043e\u0440\u044b \u0442\u0438\u043f\u0430 <code>FloatVector<\/code> \u0438\u0437 \u043c\u0430\u0441\u0441\u0438\u0432\u0430 4 <code>float<\/code>. <\/p>\n<p>  <\/p>\n<p>\u041a\u043e\u043d\u0441\u0442\u0430\u043d\u0442\u0430 <code>FloatVector.SPECIES_128<\/code> \u043e\u043f\u0440\u0435\u0434\u0435\u043b\u044f\u0435\u0442 \u0442\u0438\u043f \u0432\u0435\u043a\u0442\u043e\u0440\u0430:<\/p>\n<p>  <\/p>\n<ul>\n<li><code>FloatVector<\/code> \u2014 \u043e\u043f\u0438\u0441\u044b\u0432\u0430\u0435\u0442 \u0442\u0438\u043f \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u044f \u0432\u0435\u043a\u0442\u043e\u0440\u0430 (\u043b\u0438\u043d\u0438\u0438) \u2014 <code>float<\/code> (32 \u0431\u0438\u0442\u0430)<\/li>\n<li><code>SPECIES_128<\/code> \u2014 \u043e\u043f\u0440\u0435\u0434\u0435\u043b\u044f\u0435\u0442 \u0440\u0430\u0437\u043c\u0435\u0440 \u0432\u0435\u043a\u0442\u043e\u0440\u0430 (128 \u0431\u0438\u0442)<\/li>\n<\/ul>\n<p>  <\/p>\n<p>\u0421\u043c. \u043f\u043e\u0434\u0440\u043e\u0431\u043d\u0435\u0435 <a href=\"https:\/\/docs.oracle.com\/en\/java\/javase\/18\/docs\/api\/jdk.incubator.vector\/jdk\/incubator\/vector\/FloatVector.html#SPECIES_128\" rel=\"nofollow noopener noreferrer\">\u0437\u0434\u0435\u0441\u044c<\/a>.<\/p>\n<p>  <\/p>\n<p>\u0422\u0430\u043a\u0438\u043c \u043e\u0431\u0440\u0430\u0437\u043e\u043c, \u0434\u0430\u043d\u043d\u044b\u0439 \u0432\u0435\u043a\u0442\u043e\u0440 \u0445\u0440\u0430\u043d\u0438\u0442 4 \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u044f \u0442\u0438\u043f\u0430 <code>float<\/code>, \u0442.\u0435. 4 \u043b\u0438\u043d\u0438\u0438 (lanes).<\/p>\n<p>  <\/p>\n<p>\u0422\u0435\u043f\u0435\u0440\u044c \u0437\u0430\u0432\u0435\u0440\u043d\u0435\u043c \u044d\u0442\u043e \u0432 \u0446\u0438\u043a\u043b \u0434\u043b\u044f \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0438 \u043c\u0430\u0441\u0441\u0438\u0432\u043e\u0432 \u0431\u043e\u043b\u044c\u0448\u0435\u0439 \u0434\u043b\u0438\u043d\u044b:<\/p>\n<p>  <\/p>\n<pre><code class=\"java\">final VectorSpecies&lt;Float> SPECIES_FLOAT = FloatVector.SPECIES_128; final int length = 10_000; final int upperBound = SPECIES_FLOAT.loopBound(length);  float[] a = getArrayOfFloats(length); float[] b = getArrayOfFloats(length); float[] result = new float[length];  \/\/ \u0432\u0430\u0440\u0438\u0430\u043d\u0442 \u043f\u0435\u0440\u0432\u044b\u0439 for (int i = 0; i &lt; upperBound; i += SPECIES_FLOAT.length()) {     VectorMask&lt;Float> mask = SPECIES_FLOAT.indexInRange(i, upperBound);     FloatVector va = FloatVector.fromArray(SPECIES_FLOAT, a, i, mask);     FloatVector vb = FloatVector.fromArray(SPECIES_FLOAT, b, i, mask);     va.add(vb).intoArray(result, i, mask); } \/\/ \u0432\u044b\u0447\u0438\u0441\u043b\u044f\u0435\u043c \u043e\u0441\u0442\u0430\u0442\u043e\u043a \u043c\u0430\u0441\u0441\u0438\u0432\u0430 IntStream.range(upperBound, length).forEach(i -> result[i] = a[i] + b[i]);  \/\/ \u0432\u0430\u0440\u0438\u0430\u043d\u0442 \u0432\u0442\u043e\u0440\u043e\u0439 for (int i = 0; i &lt; upperBound; i += SPECIES_FLOAT.length()) {     FloatVector va = FloatVector.fromArray(SPECIES_FLOAT, a, i);     FloatVector vb = FloatVector.fromArray(SPECIES_FLOAT, b, i);     va.add(vb).intoArray(result, i); } \/\/ \u0432\u044b\u0447\u0438\u0441\u043b\u044f\u0435\u043c \u043e\u0441\u0442\u0430\u0442\u043e\u043a \u043c\u0430\u0441\u0441\u0438\u0432\u0430 IntStream.range(upperBound, length).forEach(i -> result[i] = a[i] + b[i]);<\/code><\/pre>\n<p>  <\/p>\n<p>\u041f\u0435\u0440\u0432\u044b\u0439 \u0432\u0430\u0440\u0438\u0430\u043d\u0442 \u043e\u0442\u043b\u0438\u0447\u0430\u0435\u0442\u0441\u044f \u043e\u0442 \u0432\u0442\u043e\u0440\u043e\u0433\u043e \u0442\u0435\u043c, \u0447\u0442\u043e \u0442\u0430\u043c \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u044e\u0442\u0441\u044f masked operations. \u0422.\u0435. \u043f\u0440\u043e\u0438\u0441\u0445\u043e\u0434\u0438\u0442 \u0437\u0430\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u0435 \u043b\u0438\u043d\u0438\u0439 \u0440\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442\u0430 \u0434\u0435\u0444\u043e\u043b\u0442\u043d\u044b\u043c \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0435\u043c.<\/p>\n<p>  <\/p>\n<p>\u041d\u0430 \u044d\u0442\u043e\u043c \u043f\u043e\u043a\u0430 \u043e\u0441\u0442\u0430\u043d\u043e\u0432\u0438\u043c\u0441\u044f. \u0411\u043e\u043b\u0435\u0435 \u043f\u043e\u0434\u0440\u043e\u0431\u043d\u043e\u0435 \u043e\u043f\u0438\u0441\u0430\u043d\u0438\u0435 Vector API \u0432\u043f\u043e\u043b\u043d\u0435 \u0442\u044f\u043d\u0435\u0442 \u043d\u0430 \u043e\u0442\u0434\u0435\u043b\u044c\u043d\u0443\u044e \u0441\u0442\u0430\u0442\u044c\u044e.<\/p>\n<p>  <\/p>\n<p>\u041f\u043e\u043b\u043d\u043e\u0441\u0442\u044c\u044e \u043a\u043e\u0434 \u043c\u043e\u0436\u043d\u043e \u043f\u043e\u0441\u043c\u043e\u0442\u0440\u0435\u0442\u044c <a href=\"https:\/\/github.com\/isdn\/java_vector_api\" rel=\"nofollow noopener noreferrer\">\u0437\u0434\u0435\u0441\u044c<\/a>.<\/p>\n<p>  <\/p>\n<h5 id=\"metodika-testirovaniya\">\u041c\u0435\u0442\u043e\u0434\u0438\u043a\u0430 \u0442\u0435\u0441\u0442\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f<\/h5>\n<p>  <\/p>\n<p>\u0411\u0435\u0440\u0435\u043c \u0434\u0432\u0430 \u043c\u0430\u0441\u0441\u0438\u0432\u0430 \u043f\u0441\u0435\u0432\u0434\u043e\u0441\u043b\u0443\u0447\u0430\u0439\u043d\u044b\u0445 \u0447\u0438\u0441\u0435\u043b, \u0432\u044b\u043f\u043e\u043b\u043d\u044f\u0435\u043c \u043d\u0435\u043a\u043e\u0442\u043e\u0440\u0443\u044e \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u044e \u043d\u0430\u0434 \u044d\u043b\u0435\u043c\u0435\u043d\u0442\u0430\u043c\u0438 \u043c\u0430\u0441\u0441\u0438\u0432\u043e\u0432 \u043e\u0431\u044b\u0447\u043d\u044b\u043c \u0441\u043f\u043e\u0441\u043e\u0431\u043e\u043c \u0438 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u044f Vector API. \u0421\u0440\u0430\u0432\u043d\u0438\u0432\u0430\u0435\u043c \u0432\u0440\u0435\u043c\u044f \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f.<\/p>\n<p>  <\/p>\n<p>\u0422\u0438\u043f\u044b \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0439 \u0432 \u043c\u0430\u0441\u0441\u0438\u0432\u0430\u0445:<\/p>\n<p>  <\/p>\n<ul>\n<li><code>long<\/code> (\u043d\u0430 \u0441\u0430\u043c\u043e\u043c \u0434\u0435\u043b\u0435 <code>int<\/code>, \u043f\u0440\u0435\u043e\u0431\u0440\u0430\u0437\u043e\u0432\u0430\u043d\u043d\u044b\u0439 \u0432 <code>long<\/code>)<\/li>\n<li><code>double<\/code><\/li>\n<li><code>float<\/code><\/li>\n<\/ul>\n<p>  <\/p>\n<p>\u0420\u0430\u0437\u043c\u0435\u0440\u044b \u043c\u0430\u0441\u0441\u0438\u0432\u043e\u0432:<\/p>\n<p>  <\/p>\n<ul>\n<li>1000<\/li>\n<li>100_000<\/li>\n<li>150_000_000<\/li>\n<li>300_000_000 (\u0442\u043e\u043b\u044c\u043a\u043e \u0434\u043b\u044f <code>float<\/code>)<\/li>\n<\/ul>\n<p>  <\/p>\n<p>\u041e\u043f\u0435\u0440\u0430\u0446\u0438\u0438:<\/p>\n<p>  <\/p>\n<ul>\n<li><code>a + b<\/code> -> \u043e\u0442\u0434\u0435\u043b\u044c\u043d\u043e \u043c\u0430\u0441\u0441\u0438\u0432\u044b <code>long<\/code> \u0438 <code>double<\/code><\/li>\n<li><code>a * b<\/code> -> \u043e\u0442\u0434\u0435\u043b\u044c\u043d\u043e \u043c\u0430\u0441\u0441\u0438\u0432\u044b <code>long<\/code> \u0438 <code>double<\/code><\/li>\n<li><code>(a + b) * 5<\/code> -> \u043c\u0430\u0441\u0441\u0438\u0432\u044b <code>long<\/code><\/li>\n<li><code>(a * b) + 0.4<\/code> -> \u043c\u0430\u0441\u0441\u0438\u0432\u044b <code>float<\/code><\/li>\n<\/ul>\n<p>  <\/p>\n<p>\u0414\u043b\u044f \u0431\u0435\u043d\u0447\u043c\u0430\u0440\u043a\u043e\u0432 \u0431\u0443\u0434\u0435\u043c \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u044c JMH.<\/p>\n<p>  <\/p>\n<h5 id=\"rezultaty\">\u0420\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442\u044b<\/h5>\n<p>  <\/p>\n<pre><code class=\"plaintext\">Benchmark                        (arrayLength)  Mode  Cnt    Score    Error  Units Main._11_testScalarLongSum                1000  avgt    5    0.002 \u00b1  0.001  ms\/op Main._11_testScalarLongSum              100000  avgt    5    0.156 \u00b1  0.026  ms\/op Main._11_testScalarLongSum           150000000  avgt    5  337.277 \u00b1 39.361  ms\/op Main._12_testVectorApiLongSum             1000  avgt    5    0.001 \u00b1  0.001  ms\/op Main._12_testVectorApiLongSum           100000  avgt    5    0.079 \u00b1  0.008  ms\/op Main._12_testVectorApiLongSum        150000000  avgt    5  263.030 \u00b1 33.013  ms\/op Main._13_testScalarDoubleSum              1000  avgt    5    0.001 \u00b1  0.001  ms\/op Main._13_testScalarDoubleSum            100000  avgt    5    0.079 \u00b1  0.007  ms\/op Main._13_testScalarDoubleSum         150000000  avgt    5  285.097 \u00b1 25.093  ms\/op Main._14_testVectorApiDoubleSum           1000  avgt    5    0.001 \u00b1  0.001  ms\/op Main._14_testVectorApiDoubleSum         100000  avgt    5    0.079 \u00b1  0.010  ms\/op Main._14_testVectorApiDoubleSum      150000000  avgt    5  276.653 \u00b1  4.322  ms\/op Main._21_testScalarLongMul                1000  avgt    5    0.002 \u00b1  0.001  ms\/op Main._21_testScalarLongMul              100000  avgt    5    0.140 \u00b1  0.005  ms\/op Main._21_testScalarLongMul           150000000  avgt    5  315.138 \u00b1 11.634  ms\/op Main._22_testVectorApiLongMul             1000  avgt    5    0.001 \u00b1  0.001  ms\/op Main._22_testVectorApiLongMul           100000  avgt    5    0.098 \u00b1  0.007  ms\/op Main._22_testVectorApiLongMul        150000000  avgt    5  270.896 \u00b1  7.999  ms\/op Main._23_testScalarDoubleMul              1000  avgt    5    0.001 \u00b1  0.001  ms\/op Main._23_testScalarDoubleMul            100000  avgt    5    0.077 \u00b1  0.009  ms\/op Main._23_testScalarDoubleMul         150000000  avgt    5  283.702 \u00b1 11.657  ms\/op Main._24_testVectorApiDoubleMul           1000  avgt    5    0.001 \u00b1  0.001  ms\/op Main._24_testVectorApiDoubleMul         100000  avgt    5    0.079 \u00b1  0.012  ms\/op Main._24_testVectorApiDoubleMul      150000000  avgt    5  277.350 \u00b1  7.887  ms\/op Main._31_testScalarLongComp               1000  avgt    5    0.002 \u00b1  0.001  ms\/op Main._31_testScalarLongComp             100000  avgt    5    0.175 \u00b1  0.002  ms\/op Main._31_testScalarLongComp          150000000  avgt    5  343.114 \u00b1 13.517  ms\/op Main._32_testVectorApiLongComp            1000  avgt    5    0.001 \u00b1  0.001  ms\/op Main._32_testVectorApiLongComp          100000  avgt    5    0.096 \u00b1  0.008  ms\/op Main._32_testVectorApiLongComp       150000000  avgt    5  271.629 \u00b1  6.572  ms\/op Main._33_testScalarFloatComp              1000  avgt    5   \u2248 10\u207b\u00b3           ms\/op Main._33_testScalarFloatComp            100000  avgt    5    0.041 \u00b1  0.014  ms\/op Main._33_testScalarFloatComp         300000000  avgt    5  326.509 \u00b1  3.468  ms\/op Main._34_testVectorApiFloatComp           1000  avgt    5    0.001 \u00b1  0.001  ms\/op Main._34_testVectorApiFloatComp         100000  avgt    5    0.048 \u00b1  0.001  ms\/op Main._34_testVectorApiFloatComp      300000000  avgt    5  276.832 \u00b1  6.612  ms\/op<\/code><\/pre>\n<p>  <\/p>\n<ul>\n<li>\u041d\u0430 \u043c\u0430\u0441\u0441\u0438\u0432\u0430\u0445 \u043d\u0435\u0431\u043e\u043b\u044c\u0448\u043e\u0433\u043e \u0440\u0430\u0437\u043c\u0435\u0440\u0430 \u0440\u0430\u0437\u043d\u0438\u0446\u0430 \u0432 \u0441\u043a\u043e\u0440\u043e\u0441\u0442\u0438 \u043f\u043b\u044e\u0441-\u043c\u0438\u043d\u0443\u0441 \u043d\u0430 \u0443\u0440\u043e\u0432\u043d\u0435 \u043f\u043e\u0433\u0440\u0435\u0448\u043d\u043e\u0441\u0442\u0438 \u0438\u0437\u043c\u0435\u0440\u0435\u043d\u0438\u044f (\u043d\u0430 \u0431\u043e\u043b\u0435\u0435 \u043c\u0435\u043b\u043a\u0438\u0445 \u043c\u0430\u0441\u0441\u0438\u0432\u0430\u0445, \u0432 \u0440\u0430\u0439\u043e\u043d\u0435 \u0441\u043e\u0442\u043d\u0438 \u044d\u043b\u0435\u043c\u0435\u043d\u0442\u043e\u0432, \u0432\u044b\u0447\u0438\u0441\u043b\u0435\u043d\u0438\u044f \u0441 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435\u043c Vector API \u043f\u0440\u043e\u0445\u043e\u0434\u044f\u0442 \u0437\u0430\u043c\u0435\u0442\u043d\u043e \u043c\u0435\u0434\u043b\u0435\u043d\u043d\u0435\u0435, \u0447\u0435\u043c \u0441\u043a\u0430\u043b\u044f\u0440\u043d\u044b\u0435).<\/li>\n<li>\u041f\u0440\u0435\u0438\u043c\u0443\u0449\u0435\u0441\u0442\u0432\u043e \u0432 \u0441\u043a\u043e\u0440\u043e\u0441\u0442\u0438 \u043d\u0430 \u0431\u043e\u043b\u044c\u0448\u0438\u0445 \u043c\u0430\u0441\u0441\u0438\u0432\u0430\u0445 \u043e\u043f\u0440\u0435\u0434\u0435\u043b\u0435\u043d\u043d\u043d\u043e \u0435\u0441\u0442\u044c, \u043d\u043e \u043d\u0435 \u043e\u0447\u0435\u043d\u044c \u0437\u043d\u0430\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e\u0435.<\/li>\n<\/ul>\n<p>  <\/p>\n<h5 id=\"vyvody\">\u0412\u044b\u0432\u043e\u0434\u044b<\/h5>\n<p>  <\/p>\n<p>\u041f\u0440\u0438\u0437\u043d\u0430\u044e\u0441\u044c, \u0438\u0437\u043d\u0430\u0447\u0430\u043b\u044c\u043d\u043e \u044f \u043f\u0440\u0435\u0434\u043f\u043e\u043b\u0430\u0433\u0430\u043b \u0437\u0430\u043c\u0435\u0442\u043d\u043e \u0431\u043e\u043b\u0435\u0435 \u0441\u0443\u0449\u0435\u0441\u0442\u0432\u0435\u043d\u043d\u044b\u0439 \u043f\u0440\u0438\u0440\u043e\u0441\u0442 \u0441\u043a\u043e\u0440\u043e\u0441\u0442\u0438 (\u0432 \u043d\u0435\u043a\u043e\u0442\u043e\u0440\u044b\u0445 \u0438\u0441\u0442\u043e\u0447\u043d\u0438\u043a\u0430\u0445 \u0447\u0438\u0442\u0430\u043b \u043f\u0440\u043e \u0432\u043f\u043b\u043e\u0442\u044c \u0434\u043e x16).<\/p>\n<p>  <\/p>\n<p>\u041d\u043e, JVM \u0443\u0436\u0435 \u0443\u043c\u0435\u0435\u0442 \u0430\u0432\u0442\u043e-\u0432\u0435\u043a\u0442\u043e\u0440\u0438\u0437\u0430\u0446\u0438\u044e \u0432 \u043e\u043f\u0440\u0435\u0434\u0435\u043b\u0435\u043d\u043d\u044b\u0445 \u0441\u043b\u0443\u0447\u0430\u044f\u0445.<\/p>\n<p>  <\/p>\n<blockquote><p>Hotspot supports some of x86 SIMD instructions<br \/>  Automatic vectorization of Java code<br \/>  Superword optimizations in HotSpot C2 compiler to derive SIMD code from sequential code <\/p><\/blockquote>\n<p><a href=\"https:\/\/cr.openjdk.java.net\/~vlivanov\/talks\/2019_CodeOne_MTE_Vectors.pdf\" rel=\"nofollow noopener noreferrer\">https:\/\/cr.openjdk.java.net\/~vlivanov\/talks\/2019_CodeOne_MTE_Vectors.pdf<\/a><\/p>\n<p>  <\/p>\n<blockquote><p>The compiler takes in standard Java bytecode and automatically determines which part can be transformed to vector instructions. Common Java environments like OpenJDK or Oracle&#8217;s Java can produce vectorized machine code.<\/p><\/blockquote>\n<p><a href=\"http:\/\/daniel-strecker.com\/blog\/2020-01-14_auto_vectorization_in_java\/\" rel=\"nofollow noopener noreferrer\">http:\/\/daniel-strecker.com\/blog\/2020-01-14_auto_vectorization_in_java\/<\/a><\/p>\n<p>  <\/p>\n<p>\u0418\u043c\u0435\u043d\u043d\u043e \u043f\u043e\u044d\u0442\u043e\u043c\u0443 \u0440\u0430\u0437\u043d\u0438\u0446\u0430 \u043d\u0435 \u0442\u0430\u043a\u0430\u044f \u0432\u043f\u0435\u0447\u0430\u0442\u043b\u044f\u044e\u0449\u0430\u044f. <\/p>\n<p>  <\/p>\n<p>Vector API \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u0435\u0442 \u044f\u0432\u043d\u043e \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u044c SIMD, \u0438 \u0432 \u043d\u0435\u043a\u043e\u0442\u043e\u0440\u044b\u0445 \u0441\u043f\u0435\u0446\u0438\u0444\u0438\u0447\u0435\u0441\u043a\u0438\u0445 \u0441\u043b\u0443\u0447\u0430\u044f\u0445 (\u043d\u0430\u043f\u0440\u0438\u043c\u0435\u0440, \u043a\u043e\u0433\u0434\u0430 JVM \u043d\u0435 \u043c\u043e\u0436\u0435\u0442 \u043f\u043e\u043b\u043d\u043e\u0441\u0442\u044c\u044e \u0438\u043b\u0438 \u043e\u043f\u0442\u0438\u043c\u0430\u043b\u044c\u043d\u043e \u043f\u0440\u043e\u0438\u0437\u0432\u0435\u0441\u0442\u0438 \u0432\u0435\u043a\u0442\u043e\u0440\u0438\u0437\u0430\u0446\u0438\u044e) \u0434\u043e\u0441\u0442\u0438\u0447\u044c \u0437\u0430\u043c\u0435\u0442\u043d\u043e\u0433\u043e \u0443\u0441\u043a\u043e\u0440\u0435\u043d\u0438\u044f. <\/p>\n<p>  <\/p>\n<p>\u0412 \u0431\u043e\u043b\u044c\u0448\u0438\u043d\u0441\u0442\u0432\u0435 \u043e\u0441\u0442\u0430\u043b\u044c\u043d\u044b\u0445 \u0441\u043b\u0443\u0447\u0430\u0435\u0432 \u0432\u043f\u043e\u043b\u043d\u0435 \u043c\u043e\u0436\u043d\u043e \u0434\u043e\u0432\u0435\u0440\u0438\u0442\u044c\u0441\u044f JVM.<\/p>\n<p>  <\/p>\n<h5 id=\"ssylki\">\u0421\u0441\u044b\u043b\u043a\u0438<\/h5>\n<p>  <\/p>\n<p><a href=\"https:\/\/blogs.oracle.com\/javamagazine\/post\/java-vector-api-simd\" rel=\"nofollow noopener noreferrer\">https:\/\/blogs.oracle.com\/javamagazine\/post\/java-vector-api-simd<\/a><br \/>  <a href=\"https:\/\/docs.oracle.com\/en\/java\/javase\/18\/docs\/api\/jdk.incubator.vector\/jdk\/incubator\/vector\/package-summary.html\" rel=\"nofollow noopener noreferrer\">https:\/\/docs.oracle.com\/en\/java\/javase\/18\/docs\/api\/jdk.incubator.vector\/jdk\/incubator\/vector\/package-summary.html<\/a><\/p>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"v-portal\" style=\"display:none;\"><\/div>\n<\/div>\n<p> <!----> <!----><br \/> \u0441\u0441\u044b\u043b\u043a\u0430 \u043d\u0430 \u043e\u0440\u0438\u0433\u0438\u043d\u0430\u043b \u0441\u0442\u0430\u0442\u044c\u0438 <a href=\"https:\/\/habr.com\/ru\/post\/679492\/\"> https:\/\/habr.com\/ru\/post\/679492\/<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<div><\/div>\n<div id=\"post-content-body\">\n<div>\n<div class=\"article-formatted-body article-formatted-body article-formatted-body_version-1\">\n<div xmlns=\"http:\/\/www.w3.org\/1999\/xhtml\">\n<p>\u041d\u0435\u043a\u043e\u0442\u043e\u0440\u043e\u0435 \u0432\u0440\u0435\u043c\u044f \u043d\u0430\u0437\u0430\u0434 \u043f\u043e\u043f\u0430\u043b\u0430\u0441\u044c \u043d\u0430 \u0433\u043b\u0430\u0437\u0430 \u0441\u0442\u0430\u0442\u044c\u044f \u043f\u0440\u043e Vector API \u0432 Java.<\/p>\n<p>  <\/p>\n<p>\u041f\u0440\u043e\u0447\u0438\u0442\u0430\u043b, \u0437\u0430\u0438\u043d\u0442\u0435\u0440\u0435\u0441\u043e\u0432\u0430\u043b\u0441\u044f. \u041d\u0430\u043a\u043e\u043d\u0435\u0446, \u043d\u0435\u0434\u0430\u0432\u043d\u043e \u0434\u043e\u0448\u043b\u0438 \u0440\u0443\u043a\u0438 \u043f\u043e\u0441\u043c\u043e\u0442\u0440\u0435\u0442\u044c, \u0447\u0442\u043e \u0436\u0435 \u044d\u0442\u043e \u0442\u0430\u043a\u043e\u0435 \u0438 \u043a\u0430\u043a \u0440\u0430\u0431\u043e\u0442\u0430\u0435\u0442. <\/p>\n<p>  <\/p>\n<p>\u0420\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442\u044b \u043d\u0435\u043c\u043d\u043e\u0433\u043e \u043d\u0435\u043e\u0434\u043d\u043e\u0437\u043d\u0430\u0447\u043d\u044b\u0435.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[],"tags":[],"class_list":["post-336280","post","type-post","status-publish","format-standard","hentry"],"_links":{"self":[{"href":"https:\/\/savepearlharbor.com\/index.php?rest_route=\/wp\/v2\/posts\/336280","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/savepearlharbor.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/savepearlharbor.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/savepearlharbor.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/savepearlharbor.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=336280"}],"version-history":[{"count":0,"href":"https:\/\/savepearlharbor.com\/index.php?rest_route=\/wp\/v2\/posts\/336280\/revisions"}],"wp:attachment":[{"href":"https:\/\/savepearlharbor.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=336280"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/savepearlharbor.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=336280"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/savepearlharbor.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=336280"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}